⚡ Latest Articles
The Quantum Insider
Insider Brief PRESS RELEASE — BMO today announced new partnerships with Quantum Industry Canada (QIC) and the Chicago Quantum Exchange (CQE), strengthening the bank’s engagement with leading quantum research, industry and policy organizations. The partnerships build on
The Quantum Insider
Insider Brief PRESS RELEASE — Controlling photon spin, or the handedness of light, is useful for storing and transmitting information. However, generating circularly polarized light typically requires complex or chiral structures. Researchers from the Tokyo University of Science show that hitt
The Quantum Insider
Insider Brief PRESS RELEASE — QAI Ventures and QCentroid have formed a strategic partnership to make quantum computing tangible, accessible, and actionable for industry. By combining QAI Ventures’ global ecosystem with QCentroid’s enterprise quantum platform, the two organisations are giving i
The Quantum Insider
By Craig Costello Professor, School of Computer Science, Queensland University of Technology Online data is generally pretty secure. Assuming everyone is careful with passwords and other protections, you can think of it as being locked in a vault so strong that even all the world’s supercomputers, w
The Quantum Insider
Guest Post by Howard Rupprecht – managing director, CSconnected In October 2023, a small British company called KETS Quantum Security completed a successful trial of quantum-encrypted communications on a standard telecoms network. It was a landmark moment providing proof that quantum-secure technolo
The Quantum Insider
Insider Brief PRESS RELEASE — Pasqal, a global leader in neutral‑atom quantum computing, today announced a strategic collaboration with True Nexus, a computational intelligence company focused on making protein functionality programmable for real‑world food applications. Pasqal recently announ
The Quantum Insider
Insider Brief PRESS RELEASE — Northwest Quantum Nexus (NQN), the regional quantum technology hub serving Washington, Oregon, Idaho, and Montana, today announces NW Quantum Day — a landmark regional summit marking World Quantum Day 2026 in Seattle. The event, co-hosted by K&L Gates and taki
The Quantum Insider
Insider Brief Don’t listen to TLC. When it comes to error correction, in fact, do go chasing waterfalls. A new study shows that artificial intelligence can unlock a “waterfall” effect in error correction, sharply reducing error rates and processing time. Researchers from Harvard University rep
The Quantum Insider
Guest Post by Jim McMahon Superconducting qubits, which are used in quantum computers, are extremely sensitive to external influence. They need to be cooled to milli-Kelvin temperatures to maintain their quantum state and prevent decoherence, which is the loss of quantum information.  Dilution
The Quantum Insider
Insider Brief PRESS RELEASE — In honor of the 2025 Nobel Prize in Physics, Qolab and IQCC are proud to announce the John Martinis Grants for Experimental Superconducting Device Physics. The goal of the program is to provide research and training resources to the next generation of experimental
Nature Quantum
Quantum Computing Report
IQM Quantum Computers has announced the opening of its first U.S. Quantum Technology Center, located within the University of Maryland’s Discovery District in College Park. The move is a strategic expansion into the North American market, placing the company within the Capital of Quantum (CoQ) initi
Quantum Computing Report
Pasqal and Saudi-based computational intelligence firm True Nexus (a branch of AI Bobby) have entered a strategic partnership to apply neutral-atom quantum computing to the study of protein functionality. The initiative focuses on addressing technical barriers in the alternative protein industry, sp
Quantum Computing Report
QuantrolOx, a developer of measurement and automation platforms for quantum hardware, has partnered with Singapore-based RAQS Quantum to bring its Quantum EDGE platform and Quantum EDGE Academy to the Asia Pacific region. Announced at GITEX Asia 2026, the collaboration addresses the industry-wide bo
Quantum Computing Report
Overview of Q-NEXUS: a heterogeneous architecture made of specialized functional modules connected through an interconnect bus Q-CTRL has introduced Q-NEXUS, a heterogeneous quantum computing architecture designed to address the physical resource bottlenecks currently limiting large-scale quantum co
Quantum Computing Report
Terra Quantum AG, a St. Gallen-based leader in hybrid quantum-classical solutions, has signed a non-binding letter of intent (LOI) to go public through a business combination with Mountain Lake Acquisition Corp. II (Nasdaq: MLAA). The transaction values Terra Quantum at $3.25 billion, reflecting sig
Quantum Computing Report
Qoro Quantum, a London-based deep-tech startup, has raised $750,000 in pre-seed funding to address the integration bottleneck between classical and quantum computing. The round was led by Ada Ventures, with participation from Superangels Venture Fund and the Polsky Center for Entrepreneurship and In
Quantum Computing Report
Horizon Quantum Holdings Ltd. (Nasdaq: HQ) and IonQ (NYSE: IONQ) have announced a strategic agreement for the purchase of a 6th-generation, chip-based 256-qubit trapped-ion system. This acquisition is a core component of Horizon Quantum’s strategy to expand its hardware testbed beyond its existing s
Quantum Computing Report
Infleqtion (NYSE: INFQ), in collaboration with NASA’s Jet Propulsion Laboratory (JPL), has provided an upgraded physics package to the International Space Station (ISS) via the Northrop Grumman-24 (NG-24) cargo mission. This hardware update is designed for the Cold Atom Laboratory (CAL), the first c
Quantum Computing Report
Riverlane, a developer of quantum error correction (QEC) technology, has released performance metrics for its second-generation Deltaflow 2 system, demonstrating a mean latency of 16.32µs. This result was achieved using data from Google’s 2024 "Willow" experiment, which involved a distance-5 (d5) ro
Quantum Computing Report
QuiX Quantum has appointed Robin Wittland as Chief Commercial Officer (CCO). Wittland brings over 25 years of experience from senior leadership roles at Microsoft and WORTMANN AG, and most recently served as CCO at planqc. In his new role, he will lead QuiX Quantum’s global commercial strategy and s
arXiv Quantum Physics
arXiv:2604.08655v1 Announce Type: new
Abstract: Achieving sufficiently low residual excited-state populations remains a key challenge in superconducting quantum circuits, particularly for protocols operating close to noise limits or requiring repeated qubit initialization. Existing protocols primar
arXiv Quantum Physics
arXiv:2604.08661v1 Announce Type: new
Abstract: Neural Quantum States based on autoregressive recurrent neural network (RNN) wave functions enable efficient sampling without Markov-chain autocorrelation, but standard RNN architectures are biased toward finite-length correlations and can fail on sta
arXiv Quantum Physics
arXiv:2604.08663v1 Announce Type: new
Abstract: How can one certify that an unknown quantum state possesses magic without resorting to full state tomography? We address this question by introducing two thermodynamic witnesses that rely solely on energy and heat measurements. First, we define the st
arXiv Quantum Physics
arXiv:2604.08672v1 Announce Type: new
Abstract: Quantum error correction using erasure qubits offers higher fault-tolerant thresholds and improved scaling by converting dominant physical errors into detectable erasures. In superconducting circuits, erasure qubits can be constructed using the dual-r
arXiv Quantum Physics
arXiv:2604.08674v1 Announce Type: new
Abstract: As the capabilities of quantum computing hardware continue to rise, algorithms that exploit them are becoming increasingly complex. These developments increase the need for sophisticated compilation frameworks that translate high-level algorithms into
arXiv Quantum Physics
arXiv:2604.08692v1 Announce Type: new
Abstract: A quantum network's purpose is to enable users to execute applications on end nodes. This requires the network to provide the service of creating entangled links between those nodes. Users of mature networks, such as the internet or the telephone netw
arXiv Quantum Physics
arXiv:2604.08717v1 Announce Type: new
Abstract: Temporally multimode squeezed states have been a topic of recent interest due to their applications in quantum communication, information processing, and sensing. Characterizing the mode shapes is crucial for effectively manipulating these states, but
arXiv Quantum Physics
arXiv:2604.08763v1 Announce Type: new
Abstract: We extend the Weak Adversarial Neural Pushforward Method to the Wigner transport equation governing the phase-space dynamics of quantum systems. The central contribution is a structural observation: integrating the nonlocal pseudo-differential potenti
arXiv Quantum Physics
arXiv:2604.08813v1 Announce Type: new
Abstract: Resonators and qubits with a niobium (Nb) base metal layer achieve some of the highest coherence times in superconducting quantum devices. The performance of such devices is often limited by loss associated with two-level systems, which are found prim
arXiv Quantum Physics
arXiv:2604.08827v1 Announce Type: new
Abstract: Machine learning models and their applications, such as autonomous driving systems, are becoming increasingly common and are essential components of human daily life. However, due to their sensitivity to perturbed noise, these models are easily suscep
arXiv Quantum Physics
arXiv:2604.08852v1 Announce Type: new
Abstract: The goal of this chapter is to investigate the effects of relaxation and dephasing on the quantum Rabi model in the ultrastrong coupling regime, and to provide explicit formulas to implement and numerically solve the resulting nonunitary dynamics from
arXiv Quantum Physics
arXiv:2604.08861v1 Announce Type: new
Abstract: The design of coupler-based superconducting two-qubit gates simplifies circuit layout and alleviate frequency crowding, thereby enhancing the scalability and flexibility of quantum chips. However, in such architectures, a trade-off often exists betwee
arXiv Quantum Physics
arXiv:2604.08871v1 Announce Type: new
Abstract: Quantum-mechanical incompatibility, which precludes the simultaneous precise measurement of non-commuting observables, imposes fundamental limits on the rate at which classical information can be extracted. While the potential to surpass these limits
arXiv Quantum Physics
arXiv:2604.08918v1 Announce Type: new
Abstract: Bell statistical-strength analyses and complexity-based model selection are usually treated separately. Here we relate them by showing that a witness obtained from a coarse-graining of full Bell trials yields, through data processing, a lower bound on
arXiv Quantum Physics
arXiv:2604.08919v1 Announce Type: new
Abstract: The Lucas sequences are integers defined by a homogeneous recurrence relation. They include the well-known Fibonacci numbers, which appear abundantly in nature. The complementary Lucas numbers, defined by the same recurrence relation, are less well-kn
arXiv Quantum Physics
arXiv:2604.08955v1 Announce Type: new
Abstract: Superconducting traveling-wave parametric amplifiers (TWPAs) are essential elements for enhancing the signal-to-noise ratio (SNR) and thus the read-out fidelity of superconducting qubits because of their high gain and near quantum-limited noise. Howev
arXiv Quantum Physics
arXiv:2604.09002v1 Announce Type: new
Abstract: Quantum repeaters constitute a promising platform for enabling long distance quantum communication and may ultimately serve as the backbone of a secure quantum internet, a scalable quantum network, or a distributed quantum computer. An efficient appro
arXiv Quantum Physics
arXiv:2604.09040v1 Announce Type: new
Abstract: Giannelli and Chiribella derived an observable-generator duality for energy from a collision model of informational nonequilibrium. We study a continuous-variable version aimed at the Galilean one-particle sector. A smooth family of reference states a
arXiv Quantum Physics
arXiv:2604.09050v1 Announce Type: new
Abstract: Superconducting coplanar waveguide resonators are essential components in quantum processors, where their internal quality factor (Qi) constrains qubit coherence and readout fidelity. In niobium devices, microwave losses at millikelvin temperatures ar
arXiv Quantum Physics
arXiv:2604.09068v1 Announce Type: new
Abstract: Beamforming is conventionally understood as a collective property of many discrete antenna elements in both communication and radar fields, which links angular selectivity to array size, element spacing, and band-specific hardware. Here we uncover a f
arXiv Quantum Physics
arXiv:2604.09144v1 Announce Type: new
Abstract: Quantum key distribution (QKD) networks provide information-theoretically secure keys for distant parties, emerging as a vital alternative to classical cryptography infrastructures threatened by quantum computing. In QKD networks, the immediacy of key
arXiv Quantum Physics
arXiv:2604.09192v1 Announce Type: new
Abstract: We study the signalling structure of higher order quantum maps from an order-theoretic perspective, building on the combinatorial characterization of higher order types by Bisio and Perinotti. We have shown in a previous work arxiv:2411.09256 that typ
arXiv Quantum Physics
arXiv:2604.09196v1 Announce Type: new
Abstract: The standard stimulated Raman adiabatic passage (STIRAP) protocol enables high-fidelity quantum state transfer in an ideal three-level system via adiabatic following of a dark state evolution. However, in practical systems with more energy levels, con
arXiv Quantum Physics
arXiv:2604.09219v1 Announce Type: new
Abstract: Optically Pumped Magnetometers use light to drive an atomic vapor into a Non-Equilibrium Steady State for sensing. This kind of state is achieved when spin-exchange collisions, together with optical pumping, dominate the relaxation dynamics, redistrib
arXiv Quantum Physics
arXiv:2604.09257v1 Announce Type: new
Abstract: Conventional polarimetry, including schemes leveraging entangled light, characterizes optical samples through linear transformations of polarization states. We introduce a two-photon probing approach in which both photons of an entangled pair interact
arXiv Quantum Physics
arXiv:2604.09284v1 Announce Type: new
Abstract: We investigate the dynamics of a charged particle interacting with a multimode quantized electromagnetic field and obtain an analytic solution for the full electron--field system. This framework enables the calculation of position expectation values a
arXiv Quantum Physics
arXiv:2604.09295v1 Announce Type: new
Abstract: This paper presents a generalized circuit framework for constructing Shih-type fractionalizations of unitary operators of dyadic order, i.e., operators $U$ satisfying $U^{2^n}=I$. Building upon the architecture of the quantum fractional Fourier transf
arXiv Quantum Physics
arXiv:2604.09306v1 Announce Type: new
Abstract: Quantum networks are expected to become a key enabler for interconnecting quantum devices. In contrast to classical communication networks, however, information transfer in quantum networks is usually restricted to short distances due to physical cons
arXiv Quantum Physics
arXiv:2604.09310v1 Announce Type: new
Abstract: Spin defects in solids, such as the nitrogen-vacancy (NV) center in diamond, have emerged as a key tool for detecting nuclear spins at the nanoscale. While active nuclear spin control via radio-frequency (RF) irradiation is often unnecessary for stand
arXiv Quantum Physics
arXiv:2604.09314v1 Announce Type: new
Abstract: We investigate the emergence of semiclassical dynamics in the quantum Rabi model using a recently developed limiting procedure that formally establishes correspondence with the semiclassical Rabi Hamiltonian [E. K. Twyeffort Irish and A. D. Armour, Ph
arXiv Quantum Physics
arXiv:2604.09337v1 Announce Type: new
Abstract: Tensor network techniques are becoming increasingly popular tools to solve partial differential equations within the so-called quantics representation. Their popularity stems from the fact that their spatial resolution depends only logarithmically on
arXiv Quantum Physics
arXiv:2604.09341v1 Announce Type: new
Abstract: We analyze Fock-state lattices (FSLs) from an algebraic viewpoint. Starting from a Lie algebra, we associate a FSL constructed from the action of its generators: diagonal (Cartan) generators define the lattice sites, while off-diagonal (root) generato
arXiv Quantum Physics
arXiv:2604.09357v1 Announce Type: new
Abstract: In this work we introduce discrete-time quantum walks in state space, more precisely on Fock-state lattices. Fock-state lattices provide a natural and clean setting for implementing lattice models, particularly in quantum optical systems. Thus, contra
arXiv Quantum Physics
arXiv:2604.09374v1 Announce Type: new
Abstract: We propose a Hybrid Quantum-Classical Physics-Informed Neural Network (HQC-PINN) that integrates parameterized variational quantum circuits into the PINN framework for hydrological PDE-constrained learning. Our architecture encodes multi-source remote
arXiv Quantum Physics
arXiv:2604.09384v1 Announce Type: new
Abstract: We review the plethora of uncertainty relations that appear in quantum mechanics and their nuances. We present both foundational applications, e.g. in understanding and defining complementarity, and practical applications, e.g. in quantum metrology an
arXiv Quantum Physics
arXiv:2604.09410v1 Announce Type: new
Abstract: Thermal behavior in subsystems of closed quantum systems is commonly attributed to dynamical chaos, quantum ergodicity, canonical typicality, or the eigenstate thermalization hypothesis, suggesting a fundamentally statistical origin of thermalization.
arXiv Quantum Physics
arXiv:2604.09458v1 Announce Type: new
Abstract: Nonlocal games provide a unified framework for studying the distinction between classical, quantum, and more general no-signaling correlations. In this work, we develop this perspective by connecting the Bell-locality framework to several complementar
arXiv Quantum Physics
arXiv:2604.09483v1 Announce Type: new
Abstract: Resolving degenerate quantum eigenspaces - including topologically ordered ground states and frustrated magnets - requires preparing high-fidelity states that span every direction of the target manifold. Existing variational and projective algorithms
arXiv Quantum Physics
arXiv:2604.09538v1 Announce Type: new
Abstract: The Difference-of-Gaussian (DoG) is a widely used operator across applications, including image processing (feature and edge detection), quantum machine learning, and finite-difference methods (approximations of the Laplacian-of-Gaussian). In this pap
arXiv Quantum Physics
arXiv:2604.08570v1 Announce Type: cross
Abstract: Large Language Models (LLMs) are increasingly used for code generation, yet quantum code generation is still evaluated mostly within single frameworks, making it difficult to separate quantum reasoning from framework familiarity. We introduce QuanBe
Science
Science, Volume 392, Issue 6794, Page 155-155, April 2026.
Science
Science, Volume 392, Issue 6794, Page 154-154, April 2026.
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Science, Volume 392, Issue 6794, April 2026.
Science
Science, Volume 392, Issue 6794, Page 178-182, April 2026.
Science
Science, Volume 392, Issue 6794, April 2026.
Science
Science, Volume 392, Issue 6794, April 2026.
Science
Science, Volume 392, Issue 6794, April 2026.
Science
Science, Volume 392, Issue 6794, April 2026.
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Science, Volume 392, Issue 6794, Page 221-224, April 2026.
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Science, Volume 392, Issue 6794, April 2026.
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Science, Volume 392, Issue 6794, Page 188-193, April 2026.
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Science, Volume 392, Issue 6794, Page 194-201, April 2026.
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Science, Volume 392, Issue 6794, April 2026.
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Science, Volume 392, Issue 6794, Page 159-166, April 2026.
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Science, Volume 392, Issue 6794, Page 143-144, April 2026.
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Science, Volume 392, Issue 6794, Page 144-145, April 2026.
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Science, Volume 392, Issue 6794, Page 147-148, April 2026.
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Science, Volume 392, Issue 6794, Page 149-150, April 2026.
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📰 Quantum News
The Quantum Insider
Insider Brief PRESS RELEASE — BMO today announced new partnerships with Quantum Industry Canada (QIC) and the Chicago Quantum Exchange (CQE), strengthening the bank’s engagement with leading quantum research, industry and policy organizations. The partnerships build on
The Quantum Insider
Insider Brief PRESS RELEASE — Controlling photon spin, or the handedness of light, is useful for storing and transmitting information. However, generating circularly polarized light typically requires complex or chiral structures. Researchers from the Tokyo University of Science show that hitt
The Quantum Insider
Insider Brief PRESS RELEASE — QAI Ventures and QCentroid have formed a strategic partnership to make quantum computing tangible, accessible, and actionable for industry. By combining QAI Ventures’ global ecosystem with QCentroid’s enterprise quantum platform, the two organisations are giving i
The Quantum Insider
By Craig Costello Professor, School of Computer Science, Queensland University of Technology Online data is generally pretty secure. Assuming everyone is careful with passwords and other protections, you can think of it as being locked in a vault so strong that even all the world’s supercomputers, w
The Quantum Insider
Guest Post by Howard Rupprecht – managing director, CSconnected In October 2023, a small British company called KETS Quantum Security completed a successful trial of quantum-encrypted communications on a standard telecoms network. It was a landmark moment providing proof that quantum-secure technolo
The Quantum Insider
Insider Brief PRESS RELEASE — Pasqal, a global leader in neutral‑atom quantum computing, today announced a strategic collaboration with True Nexus, a computational intelligence company focused on making protein functionality programmable for real‑world food applications. Pasqal recently announ
The Quantum Insider
Insider Brief PRESS RELEASE — Northwest Quantum Nexus (NQN), the regional quantum technology hub serving Washington, Oregon, Idaho, and Montana, today announces NW Quantum Day — a landmark regional summit marking World Quantum Day 2026 in Seattle. The event, co-hosted by K&L Gates and taki
The Quantum Insider
Insider Brief Don’t listen to TLC. When it comes to error correction, in fact, do go chasing waterfalls. A new study shows that artificial intelligence can unlock a “waterfall” effect in error correction, sharply reducing error rates and processing time. Researchers from Harvard University rep
The Quantum Insider
Guest Post by Jim McMahon Superconducting qubits, which are used in quantum computers, are extremely sensitive to external influence. They need to be cooled to milli-Kelvin temperatures to maintain their quantum state and prevent decoherence, which is the loss of quantum information.  Dilution
The Quantum Insider
Insider Brief PRESS RELEASE — In honor of the 2025 Nobel Prize in Physics, Qolab and IQCC are proud to announce the John Martinis Grants for Experimental Superconducting Device Physics. The goal of the program is to provide research and training resources to the next generation of experimental
Quantum Computing Report
IQM Quantum Computers has announced the opening of its first U.S. Quantum Technology Center, located within the University of Maryland’s Discovery District in College Park. The move is a strategic expansion into the North American market, placing the company within the Capital of Quantum (CoQ) initi
Quantum Computing Report
Pasqal and Saudi-based computational intelligence firm True Nexus (a branch of AI Bobby) have entered a strategic partnership to apply neutral-atom quantum computing to the study of protein functionality. The initiative focuses on addressing technical barriers in the alternative protein industry, sp
Quantum Computing Report
QuantrolOx, a developer of measurement and automation platforms for quantum hardware, has partnered with Singapore-based RAQS Quantum to bring its Quantum EDGE platform and Quantum EDGE Academy to the Asia Pacific region. Announced at GITEX Asia 2026, the collaboration addresses the industry-wide bo
Quantum Computing Report
Overview of Q-NEXUS: a heterogeneous architecture made of specialized functional modules connected through an interconnect bus Q-CTRL has introduced Q-NEXUS, a heterogeneous quantum computing architecture designed to address the physical resource bottlenecks currently limiting large-scale quantum co
Quantum Computing Report
Terra Quantum AG, a St. Gallen-based leader in hybrid quantum-classical solutions, has signed a non-binding letter of intent (LOI) to go public through a business combination with Mountain Lake Acquisition Corp. II (Nasdaq: MLAA). The transaction values Terra Quantum at $3.25 billion, reflecting sig
Quantum Computing Report
Qoro Quantum, a London-based deep-tech startup, has raised $750,000 in pre-seed funding to address the integration bottleneck between classical and quantum computing. The round was led by Ada Ventures, with participation from Superangels Venture Fund and the Polsky Center for Entrepreneurship and In
Quantum Computing Report
Horizon Quantum Holdings Ltd. (Nasdaq: HQ) and IonQ (NYSE: IONQ) have announced a strategic agreement for the purchase of a 6th-generation, chip-based 256-qubit trapped-ion system. This acquisition is a core component of Horizon Quantum’s strategy to expand its hardware testbed beyond its existing s
Quantum Computing Report
Infleqtion (NYSE: INFQ), in collaboration with NASA’s Jet Propulsion Laboratory (JPL), has provided an upgraded physics package to the International Space Station (ISS) via the Northrop Grumman-24 (NG-24) cargo mission. This hardware update is designed for the Cold Atom Laboratory (CAL), the first c
Quantum Computing Report
Riverlane, a developer of quantum error correction (QEC) technology, has released performance metrics for its second-generation Deltaflow 2 system, demonstrating a mean latency of 16.32µs. This result was achieved using data from Google’s 2024 "Willow" experiment, which involved a distance-5 (d5) ro
Quantum Computing Report
QuiX Quantum has appointed Robin Wittland as Chief Commercial Officer (CCO). Wittland brings over 25 years of experience from senior leadership roles at Microsoft and WORTMANN AG, and most recently served as CCO at planqc. In his new role, he will lead QuiX Quantum’s global commercial strategy and s
Science
Science, Volume 392, Issue 6794, Page 155-155, April 2026.
Science
Science, Volume 392, Issue 6794, Page 154-154, April 2026.
Science
Science, Volume 392, Issue 6794, April 2026.
Science
Science, Volume 392, Issue 6794, Page 178-182, April 2026.
Science
Science, Volume 392, Issue 6794, April 2026.
Science
Science, Volume 392, Issue 6794, April 2026.
Science
Science, Volume 392, Issue 6794, April 2026.
Science
Science, Volume 392, Issue 6794, April 2026.
Science
Science, Volume 392, Issue 6794, Page 221-224, April 2026.
Science
Science, Volume 392, Issue 6794, April 2026.
Science
Science, Volume 392, Issue 6794, Page 188-193, April 2026.
Science
Science, Volume 392, Issue 6794, Page 194-201, April 2026.
Science
Science, Volume 392, Issue 6794, Page 183-187, April 2026.
Science
Science, Volume 392, Issue 6794, Page 202-206, April 2026.
Science
Science, Volume 392, Issue 6794, April 2026.
Science
Science, Volume 392, Issue 6794, Page 216-220, April 2026.
Science
Science, Volume 392, Issue 6794, Page 207-215, April 2026.
Science
Science, Volume 392, Issue 6794, April 2026.
Science
Science, Volume 392, Issue 6794, Page 159-166, April 2026.
Science
Science, Volume 392, Issue 6794, Page 143-144, April 2026.
Science
Science, Volume 392, Issue 6794, Page 144-145, April 2026.
Science
Science, Volume 392, Issue 6794, Page 147-148, April 2026.
Science
Science, Volume 392, Issue 6794, Page 149-150, April 2026.
Science
Science, Volume 392, Issue 6794, Page 157-158, April 2026.
Science
Science, Volume 392, Issue 6794, Page 156-157, April 2026.
Science
Science, Volume 392, Issue 6794, Page 128-129, April 2026.
Science
Science, Volume 392, Issue 6794, Page 130-131, April 2026.
Science
Science, Volume 392, Issue 6794, Page 132-133, April 2026.
Science
Science, Volume 392, Issue 6794, Page 133-133, April 2026.
Science
Science, Volume 392, Issue 6794, Page 134-135, April 2026.
Science
Science, Volume 392, Issue 6794, Page 135-136, April 2026.
Science
Science, Volume 392, Issue 6794, Page 136-137, April 2026.
Science
Science, Volume 392, Issue 6794, April 2026.
Science
Science, Volume 392, Issue 6794, Page 127-127, April 2026.
Science
Science, Volume 392, Issue 6794, Page 151-153, April 2026.
🔬 Research Papers
Nature Quantum
arXiv Quantum Physics
arXiv:2604.08655v1 Announce Type: new
Abstract: Achieving sufficiently low residual excited-state populations remains a key challenge in superconducting quantum circuits, particularly for protocols operating close to noise limits or requiring repeated qubit initialization. Existing protocols primar
arXiv Quantum Physics
arXiv:2604.08661v1 Announce Type: new
Abstract: Neural Quantum States based on autoregressive recurrent neural network (RNN) wave functions enable efficient sampling without Markov-chain autocorrelation, but standard RNN architectures are biased toward finite-length correlations and can fail on sta
arXiv Quantum Physics
arXiv:2604.08663v1 Announce Type: new
Abstract: How can one certify that an unknown quantum state possesses magic without resorting to full state tomography? We address this question by introducing two thermodynamic witnesses that rely solely on energy and heat measurements. First, we define the st
arXiv Quantum Physics
arXiv:2604.08672v1 Announce Type: new
Abstract: Quantum error correction using erasure qubits offers higher fault-tolerant thresholds and improved scaling by converting dominant physical errors into detectable erasures. In superconducting circuits, erasure qubits can be constructed using the dual-r
arXiv Quantum Physics
arXiv:2604.08674v1 Announce Type: new
Abstract: As the capabilities of quantum computing hardware continue to rise, algorithms that exploit them are becoming increasingly complex. These developments increase the need for sophisticated compilation frameworks that translate high-level algorithms into
arXiv Quantum Physics
arXiv:2604.08692v1 Announce Type: new
Abstract: A quantum network's purpose is to enable users to execute applications on end nodes. This requires the network to provide the service of creating entangled links between those nodes. Users of mature networks, such as the internet or the telephone netw
arXiv Quantum Physics
arXiv:2604.08717v1 Announce Type: new
Abstract: Temporally multimode squeezed states have been a topic of recent interest due to their applications in quantum communication, information processing, and sensing. Characterizing the mode shapes is crucial for effectively manipulating these states, but
arXiv Quantum Physics
arXiv:2604.08763v1 Announce Type: new
Abstract: We extend the Weak Adversarial Neural Pushforward Method to the Wigner transport equation governing the phase-space dynamics of quantum systems. The central contribution is a structural observation: integrating the nonlocal pseudo-differential potenti
arXiv Quantum Physics
arXiv:2604.08813v1 Announce Type: new
Abstract: Resonators and qubits with a niobium (Nb) base metal layer achieve some of the highest coherence times in superconducting quantum devices. The performance of such devices is often limited by loss associated with two-level systems, which are found prim
arXiv Quantum Physics
arXiv:2604.08827v1 Announce Type: new
Abstract: Machine learning models and their applications, such as autonomous driving systems, are becoming increasingly common and are essential components of human daily life. However, due to their sensitivity to perturbed noise, these models are easily suscep
arXiv Quantum Physics
arXiv:2604.08852v1 Announce Type: new
Abstract: The goal of this chapter is to investigate the effects of relaxation and dephasing on the quantum Rabi model in the ultrastrong coupling regime, and to provide explicit formulas to implement and numerically solve the resulting nonunitary dynamics from
arXiv Quantum Physics
arXiv:2604.08861v1 Announce Type: new
Abstract: The design of coupler-based superconducting two-qubit gates simplifies circuit layout and alleviate frequency crowding, thereby enhancing the scalability and flexibility of quantum chips. However, in such architectures, a trade-off often exists betwee
arXiv Quantum Physics
arXiv:2604.08871v1 Announce Type: new
Abstract: Quantum-mechanical incompatibility, which precludes the simultaneous precise measurement of non-commuting observables, imposes fundamental limits on the rate at which classical information can be extracted. While the potential to surpass these limits
arXiv Quantum Physics
arXiv:2604.08918v1 Announce Type: new
Abstract: Bell statistical-strength analyses and complexity-based model selection are usually treated separately. Here we relate them by showing that a witness obtained from a coarse-graining of full Bell trials yields, through data processing, a lower bound on
arXiv Quantum Physics
arXiv:2604.08919v1 Announce Type: new
Abstract: The Lucas sequences are integers defined by a homogeneous recurrence relation. They include the well-known Fibonacci numbers, which appear abundantly in nature. The complementary Lucas numbers, defined by the same recurrence relation, are less well-kn
arXiv Quantum Physics
arXiv:2604.08955v1 Announce Type: new
Abstract: Superconducting traveling-wave parametric amplifiers (TWPAs) are essential elements for enhancing the signal-to-noise ratio (SNR) and thus the read-out fidelity of superconducting qubits because of their high gain and near quantum-limited noise. Howev
arXiv Quantum Physics
arXiv:2604.09002v1 Announce Type: new
Abstract: Quantum repeaters constitute a promising platform for enabling long distance quantum communication and may ultimately serve as the backbone of a secure quantum internet, a scalable quantum network, or a distributed quantum computer. An efficient appro
arXiv Quantum Physics
arXiv:2604.09040v1 Announce Type: new
Abstract: Giannelli and Chiribella derived an observable-generator duality for energy from a collision model of informational nonequilibrium. We study a continuous-variable version aimed at the Galilean one-particle sector. A smooth family of reference states a
arXiv Quantum Physics
arXiv:2604.09050v1 Announce Type: new
Abstract: Superconducting coplanar waveguide resonators are essential components in quantum processors, where their internal quality factor (Qi) constrains qubit coherence and readout fidelity. In niobium devices, microwave losses at millikelvin temperatures ar
arXiv Quantum Physics
arXiv:2604.09068v1 Announce Type: new
Abstract: Beamforming is conventionally understood as a collective property of many discrete antenna elements in both communication and radar fields, which links angular selectivity to array size, element spacing, and band-specific hardware. Here we uncover a f
arXiv Quantum Physics
arXiv:2604.09144v1 Announce Type: new
Abstract: Quantum key distribution (QKD) networks provide information-theoretically secure keys for distant parties, emerging as a vital alternative to classical cryptography infrastructures threatened by quantum computing. In QKD networks, the immediacy of key
arXiv Quantum Physics
arXiv:2604.09192v1 Announce Type: new
Abstract: We study the signalling structure of higher order quantum maps from an order-theoretic perspective, building on the combinatorial characterization of higher order types by Bisio and Perinotti. We have shown in a previous work arxiv:2411.09256 that typ
arXiv Quantum Physics
arXiv:2604.09196v1 Announce Type: new
Abstract: The standard stimulated Raman adiabatic passage (STIRAP) protocol enables high-fidelity quantum state transfer in an ideal three-level system via adiabatic following of a dark state evolution. However, in practical systems with more energy levels, con
arXiv Quantum Physics
arXiv:2604.09219v1 Announce Type: new
Abstract: Optically Pumped Magnetometers use light to drive an atomic vapor into a Non-Equilibrium Steady State for sensing. This kind of state is achieved when spin-exchange collisions, together with optical pumping, dominate the relaxation dynamics, redistrib
arXiv Quantum Physics
arXiv:2604.09257v1 Announce Type: new
Abstract: Conventional polarimetry, including schemes leveraging entangled light, characterizes optical samples through linear transformations of polarization states. We introduce a two-photon probing approach in which both photons of an entangled pair interact
arXiv Quantum Physics
arXiv:2604.09284v1 Announce Type: new
Abstract: We investigate the dynamics of a charged particle interacting with a multimode quantized electromagnetic field and obtain an analytic solution for the full electron--field system. This framework enables the calculation of position expectation values a
arXiv Quantum Physics
arXiv:2604.09295v1 Announce Type: new
Abstract: This paper presents a generalized circuit framework for constructing Shih-type fractionalizations of unitary operators of dyadic order, i.e., operators $U$ satisfying $U^{2^n}=I$. Building upon the architecture of the quantum fractional Fourier transf
arXiv Quantum Physics
arXiv:2604.09306v1 Announce Type: new
Abstract: Quantum networks are expected to become a key enabler for interconnecting quantum devices. In contrast to classical communication networks, however, information transfer in quantum networks is usually restricted to short distances due to physical cons
arXiv Quantum Physics
arXiv:2604.09310v1 Announce Type: new
Abstract: Spin defects in solids, such as the nitrogen-vacancy (NV) center in diamond, have emerged as a key tool for detecting nuclear spins at the nanoscale. While active nuclear spin control via radio-frequency (RF) irradiation is often unnecessary for stand
arXiv Quantum Physics
arXiv:2604.09314v1 Announce Type: new
Abstract: We investigate the emergence of semiclassical dynamics in the quantum Rabi model using a recently developed limiting procedure that formally establishes correspondence with the semiclassical Rabi Hamiltonian [E. K. Twyeffort Irish and A. D. Armour, Ph
arXiv Quantum Physics
arXiv:2604.09337v1 Announce Type: new
Abstract: Tensor network techniques are becoming increasingly popular tools to solve partial differential equations within the so-called quantics representation. Their popularity stems from the fact that their spatial resolution depends only logarithmically on
arXiv Quantum Physics
arXiv:2604.09341v1 Announce Type: new
Abstract: We analyze Fock-state lattices (FSLs) from an algebraic viewpoint. Starting from a Lie algebra, we associate a FSL constructed from the action of its generators: diagonal (Cartan) generators define the lattice sites, while off-diagonal (root) generato
arXiv Quantum Physics
arXiv:2604.09357v1 Announce Type: new
Abstract: In this work we introduce discrete-time quantum walks in state space, more precisely on Fock-state lattices. Fock-state lattices provide a natural and clean setting for implementing lattice models, particularly in quantum optical systems. Thus, contra
arXiv Quantum Physics
arXiv:2604.09374v1 Announce Type: new
Abstract: We propose a Hybrid Quantum-Classical Physics-Informed Neural Network (HQC-PINN) that integrates parameterized variational quantum circuits into the PINN framework for hydrological PDE-constrained learning. Our architecture encodes multi-source remote
arXiv Quantum Physics
arXiv:2604.09384v1 Announce Type: new
Abstract: We review the plethora of uncertainty relations that appear in quantum mechanics and their nuances. We present both foundational applications, e.g. in understanding and defining complementarity, and practical applications, e.g. in quantum metrology an
arXiv Quantum Physics
arXiv:2604.09410v1 Announce Type: new
Abstract: Thermal behavior in subsystems of closed quantum systems is commonly attributed to dynamical chaos, quantum ergodicity, canonical typicality, or the eigenstate thermalization hypothesis, suggesting a fundamentally statistical origin of thermalization.
arXiv Quantum Physics
arXiv:2604.09458v1 Announce Type: new
Abstract: Nonlocal games provide a unified framework for studying the distinction between classical, quantum, and more general no-signaling correlations. In this work, we develop this perspective by connecting the Bell-locality framework to several complementar
arXiv Quantum Physics
arXiv:2604.09483v1 Announce Type: new
Abstract: Resolving degenerate quantum eigenspaces - including topologically ordered ground states and frustrated magnets - requires preparing high-fidelity states that span every direction of the target manifold. Existing variational and projective algorithms
arXiv Quantum Physics
arXiv:2604.09538v1 Announce Type: new
Abstract: The Difference-of-Gaussian (DoG) is a widely used operator across applications, including image processing (feature and edge detection), quantum machine learning, and finite-difference methods (approximations of the Laplacian-of-Gaussian). In this pap
arXiv Quantum Physics
arXiv:2604.08570v1 Announce Type: cross
Abstract: Large Language Models (LLMs) are increasingly used for code generation, yet quantum code generation is still evaluated mostly within single frameworks, making it difficult to separate quantum reasoning from framework familiarity. We introduce QuanBe
🏭 Industry News
The Quantum Insider
Insider Brief PRESS RELEASE — BMO today announced new partnerships with Quantum Industry Canada (QIC) and the Chicago Quantum Exchange (CQE), strengthening the bank’s engagement with leading quantum research, industry and policy organizations. The partnerships build on
The Quantum Insider
Insider Brief PRESS RELEASE — Controlling photon spin, or the handedness of light, is useful for storing and transmitting information. However, generating circularly polarized light typically requires complex or chiral structures. Researchers from the Tokyo University of Science show that hitt
The Quantum Insider
Insider Brief PRESS RELEASE — QAI Ventures and QCentroid have formed a strategic partnership to make quantum computing tangible, accessible, and actionable for industry. By combining QAI Ventures’ global ecosystem with QCentroid’s enterprise quantum platform, the two organisations are giving i
The Quantum Insider
By Craig Costello Professor, School of Computer Science, Queensland University of Technology Online data is generally pretty secure. Assuming everyone is careful with passwords and other protections, you can think of it as being locked in a vault so strong that even all the world’s supercomputers, w
The Quantum Insider
Guest Post by Howard Rupprecht – managing director, CSconnected In October 2023, a small British company called KETS Quantum Security completed a successful trial of quantum-encrypted communications on a standard telecoms network. It was a landmark moment providing proof that quantum-secure technolo
The Quantum Insider
Insider Brief PRESS RELEASE — Pasqal, a global leader in neutral‑atom quantum computing, today announced a strategic collaboration with True Nexus, a computational intelligence company focused on making protein functionality programmable for real‑world food applications. Pasqal recently announ
The Quantum Insider
Insider Brief PRESS RELEASE — Northwest Quantum Nexus (NQN), the regional quantum technology hub serving Washington, Oregon, Idaho, and Montana, today announces NW Quantum Day — a landmark regional summit marking World Quantum Day 2026 in Seattle. The event, co-hosted by K&L Gates and taki
The Quantum Insider
Insider Brief Don’t listen to TLC. When it comes to error correction, in fact, do go chasing waterfalls. A new study shows that artificial intelligence can unlock a “waterfall” effect in error correction, sharply reducing error rates and processing time. Researchers from Harvard University rep
The Quantum Insider
Guest Post by Jim McMahon Superconducting qubits, which are used in quantum computers, are extremely sensitive to external influence. They need to be cooled to milli-Kelvin temperatures to maintain their quantum state and prevent decoherence, which is the loss of quantum information.  Dilution
The Quantum Insider
Insider Brief PRESS RELEASE — In honor of the 2025 Nobel Prize in Physics, Qolab and IQCC are proud to announce the John Martinis Grants for Experimental Superconducting Device Physics. The goal of the program is to provide research and training resources to the next generation of experimental
Quantum Computing Report
IQM Quantum Computers has announced the opening of its first U.S. Quantum Technology Center, located within the University of Maryland’s Discovery District in College Park. The move is a strategic expansion into the North American market, placing the company within the Capital of Quantum (CoQ) initi
Quantum Computing Report
Pasqal and Saudi-based computational intelligence firm True Nexus (a branch of AI Bobby) have entered a strategic partnership to apply neutral-atom quantum computing to the study of protein functionality. The initiative focuses on addressing technical barriers in the alternative protein industry, sp
Quantum Computing Report
QuantrolOx, a developer of measurement and automation platforms for quantum hardware, has partnered with Singapore-based RAQS Quantum to bring its Quantum EDGE platform and Quantum EDGE Academy to the Asia Pacific region. Announced at GITEX Asia 2026, the collaboration addresses the industry-wide bo
Quantum Computing Report
Overview of Q-NEXUS: a heterogeneous architecture made of specialized functional modules connected through an interconnect bus Q-CTRL has introduced Q-NEXUS, a heterogeneous quantum computing architecture designed to address the physical resource bottlenecks currently limiting large-scale quantum co
Quantum Computing Report
Terra Quantum AG, a St. Gallen-based leader in hybrid quantum-classical solutions, has signed a non-binding letter of intent (LOI) to go public through a business combination with Mountain Lake Acquisition Corp. II (Nasdaq: MLAA). The transaction values Terra Quantum at $3.25 billion, reflecting sig
Quantum Computing Report
Qoro Quantum, a London-based deep-tech startup, has raised $750,000 in pre-seed funding to address the integration bottleneck between classical and quantum computing. The round was led by Ada Ventures, with participation from Superangels Venture Fund and the Polsky Center for Entrepreneurship and In
Quantum Computing Report
Horizon Quantum Holdings Ltd. (Nasdaq: HQ) and IonQ (NYSE: IONQ) have announced a strategic agreement for the purchase of a 6th-generation, chip-based 256-qubit trapped-ion system. This acquisition is a core component of Horizon Quantum’s strategy to expand its hardware testbed beyond its existing s
Quantum Computing Report
Infleqtion (NYSE: INFQ), in collaboration with NASA’s Jet Propulsion Laboratory (JPL), has provided an upgraded physics package to the International Space Station (ISS) via the Northrop Grumman-24 (NG-24) cargo mission. This hardware update is designed for the Cold Atom Laboratory (CAL), the first c
Quantum Computing Report
Riverlane, a developer of quantum error correction (QEC) technology, has released performance metrics for its second-generation Deltaflow 2 system, demonstrating a mean latency of 16.32µs. This result was achieved using data from Google’s 2024 "Willow" experiment, which involved a distance-5 (d5) ro
Quantum Computing Report
QuiX Quantum has appointed Robin Wittland as Chief Commercial Officer (CCO). Wittland brings over 25 years of experience from senior leadership roles at Microsoft and WORTMANN AG, and most recently served as CCO at planqc. In his new role, he will lead QuiX Quantum’s global commercial strategy and s