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The Quantum Insider
Insider Brief PRESS RELEASE — UK-based quantum technology company Moth has announced two senior hires as it expands its operations in the United States, marking a significant step in its mission to make quantum computing accessible to businesses and consumers. ...
The Quantum Insider
Insider Brief Quantum computing is shifting from a theoretical pursuit to a strategic priority for the energy sector as rising demand for compute power reshapes infrastructure, policy and investment decisions, according to a new report from S&P Global Energy. The report, a...
The Quantum Insider
Insider Brief PRESS RELEASE — IQM Quantum Computers, a global leader in superconducting quantum computing, today announced a commercial milestone to deploy a hybrid integrated quantum computer at Galaxy Systemy Informatyczne Sp. z o.o., marking its first deployment in a ...
The Quantum Insider
Insider Brief PRESS RELEASE — Delft Circuits today announces the appointment of Karen Keenan as Chief Operating Officer (COO), marking a key step in scaling the company into a global quantum I/O hardware manufacturing platform. Karen succeeds Maarten Hendriks, who will t...
The Quantum Insider
Insider Brief For nearly a century, scientists have been searching for evidence of dark matter, an invisible substance they believe makes up most of the mass of the universe. Such a discovery could lead to a greater understanding of our universe and how it works. But finding t...
The Quantum Insider
Insider Brief PRESS RELEASE — BTQ Technologies Corp. (“BTQ” or the “Company”) (Nasdaq: BTQ) (CBOE CA: BTQ), a global quantum technology company focused on securing mission-critical networks, today announced the publication of a landmark resea...
The Quantum Insider
Insider Brief PRESS RELEASE — In August 2024, the National Institute of Standards and Technology finalized the first three post-quantum cryptography standards — FIPS 203, 204, and 205 — after an eight-year global evaluation process. In January 2027, the NSA’s CNSA ...
The Quantum Insider
PRESS RELEASE — Q.ANT, a leading provider of photonic processors for energy-efficient high-performance computing and artificial intelligence, is strengthening its leadership team with a strategic new appointment: Michael Krueger started in the newly created position of V...
The Quantum Insider
Insider Brief PRESS RELEASE — Quantum computers are often described as the supercharged engines of the future — machines capable of solving certain problems that are classically intractable for today’s most powerful computers. But there’s a catch: even the most advanced ...
The Quantum Insider
Insider Brief Solana’s push toward quantum-resistant security could sharply reduce its transaction speeds, highlighting a growing trade-off between future-proofing crypto networks and maintaining performance. Solana has built its reputation on speed, processing transactions fa...
Quantum Computing Report
Podcast with Mathematician Gil Kalai from Reichman University and the Hebrew University of Jerusalem
Yuval Boger interviews mathematician Gil Kalai about his long-standing skepticism regarding scalable quantum computing. Kalai explains two main arguments behind his theory: correlated noise that may defeat quantum error correction and complexity-based limits on NISQ devices ac...
Quantum Computing Report
Q-Factor, a Tel Aviv-based quantum hardware startup, has exited stealth with $24 million (USD) in seed funding to develop a million-qubit neutral atom quantum computer. The investment round was led by NFX and TPY Capital, with significant participation from Intel Capital, Kore...
Quantum Computing Report
IQM Quantum Computers, in collaboration with Fraunhofer FOKUS, has announced a major update to the Eclipse Qrisp framework, achieving the first full gate-level compilation of Shor’s algorithm at a cryptographically relevant scale of 2048-bit keys. While previous resource estim...
Quantum Computing Report
Dr. Dominic Williamson (University of Sydney) and Theodore J. Yoder (IBM) have introduced a "gauging" procedure for fault-tolerant logical measurement in quantum error-correcting codes. Published in Nature Physics, the research was developed during Williamson’s industrial plac...
Quantum Computing Report
Postquant Labs has officially launched the public testnet for Quip.Network, a decentralized platform designed to bridge the gap between quantum hardware and blockchain infrastructure. With over 13,000 early sign-ups, the network operates as a dual-layer ecosystem: a "Compute L...
arXiv Quantum Physics
arXiv:2604.03346v1 Announce Type: new Abstract: Partial differential equations (PDEs) play a crucial role in financial mathematics, particularly in portfolio optimization, and solving them using classical numerical or neural network methods has always posed significant challen...
arXiv Quantum Physics
arXiv:2604.03360v1 Announce Type: new Abstract: Dynamic quantum circuits with mid-circuit measurements (MCMs) and feed-forward operations play a crucial role in various applications, such as quantum error correction and quantum algorithms. With advancements in quantum hardware...
arXiv Quantum Physics
arXiv:2604.03373v1 Announce Type: new Abstract: We present an approach for entangling spin qubits via capacitive coupling mediated by an ac electric field-driven multielectron mediator quantum dot. To illustrate this method, we consider the case of a driven two-electron dot th...
arXiv Quantum Physics
arXiv:2604.03435v1 Announce Type: new Abstract: We investigate high frequency motional states of trapped atomic ions. Trapped ions in rf traps are confined by an approximate harmonic potential and exhibit quantum motional states that mediate essential techniques in quantum com...
arXiv Quantum Physics
arXiv:2604.03445v1 Announce Type: new Abstract: Hybrid quantum-classical applications pose significant resource management challenges due to heterogeneity and dynamism in both infrastructure and workloads. Quantum-HPC environments integrate quantum processing units (QPUs) with...
arXiv Quantum Physics
arXiv:2604.03469v1 Announce Type: new Abstract: Reservoir computing promises a fast method for handling large amounts of temporal data. This hinges on constructing a good reservoir--a dynamical system capable of transforming inputs into a high-dimensional representation while ...
arXiv Quantum Physics
arXiv:2604.03482v1 Announce Type: new Abstract: High-gain spontaneous parametric down-conversion (SPDC) produces bright squeezed vacuum with rich high-dimensional entanglement, but its output is inherently multimodal and non-perturbative, making the full modal characterization...
arXiv Quantum Physics
arXiv:2604.03494v1 Announce Type: new Abstract: Periodic (Floquet) driving enables Hamiltonian engineering and nonequilibrium phases, but interacting systems eventually heat by absorbing energy from the drive. Disorder can greatly delay this process, yielding long-lived prethe...
arXiv Quantum Physics
arXiv:2604.03495v1 Announce Type: new Abstract: A single photon in a superposition of $d$ modes naturally encode a $d$-dimensional quantum system, a so-called qudit. We show that such superpositions can be leveraged to achieve a quantum speed-up of remote remote state preparat...
arXiv Quantum Physics
arXiv:2604.03546v1 Announce Type: new Abstract: Quantum annealing is a quantum algorithm to solve combinatorial optimization problems. In the current quantum annealing devices, the dynamic range of the input Ising Hamiltonian, defined as the ratio of the largest to the smalles...
arXiv Quantum Physics
arXiv:2604.03550v1 Announce Type: new Abstract: Monitored quantum circuits host a rich variety of exotic non-equilibrium phases. Among the most representative examples are measurement-induced phase transitions between distinct area-law entangled states. However, because these ...
arXiv Quantum Physics
arXiv:2604.03576v1 Announce Type: new Abstract: Subradiance, a hallmark cooperative phenomenon in waveguide QED, is characterized by a universal power-law scaling of decay rates with system size and underpins many applications in quantum information storage. Here, we demonstra...
arXiv Quantum Physics
arXiv:2604.03577v1 Announce Type: new Abstract: High-dimensional quantum systems greatly outperform their two-dimensional counterparts in channel capacity, quantum complexity and efficiency, quantum communication security, etc. Bell-state analyzer (BSA) is a crucial prerequisi...
arXiv Quantum Physics
arXiv:2604.03593v1 Announce Type: new Abstract: We study a discrete-time quantum walk in presence of a detector at $x_D$ initially. The detector here is repeatedly removed after a span of $t_R$, the removal time, and reinserted at random locations. Two relocation rules are con...
arXiv Quantum Physics
arXiv:2604.03607v1 Announce Type: new Abstract: We investigate absorption and scattering of structured light by atoms, treating the photon and the atomic center of mass as spatially localized wave packets. We show that vortex photons can transfer orbital angular momentum (OAM)...
arXiv Quantum Physics
arXiv:2604.03633v1 Announce Type: new Abstract: Black hole spacetimes provide a natural setting for quantum systems in curved spacetime, where effects such as Hawking radiation arise from event horizons. In this work, we investigate the impact of the Hawking effect on quantum ...
arXiv Quantum Physics
arXiv:2604.03646v1 Announce Type: new Abstract: We propose a scheme to engineer the superradiant phase transition (SPT) in cavity magnonics by periodically modulating the frequency of the magnon mode. The studied system is composed of a yttrium iron garnet (YIG) sphere positio...
arXiv Quantum Physics
arXiv:2604.03662v1 Announce Type: new Abstract: We present a unified quantum-mechanical derivation of the Wallis formula from two solvable radial systems: the circular states of the three-dimensional isotropic harmonic oscillator and the lowest-radial-branch states of the plan...
arXiv Quantum Physics
Quantum Algebraic Diversity: Single-Copy Density Matrix Estimation via Group-Structured Measurements
arXiv:2604.03725v1 Announce Type: new Abstract: We extend the algebraic diversity (AD) framework from classical signal processing to quantum measurement theory. The central result -- the Quantum Algebraic Diversity (QAD) Theorem -- establishes that a group-structured positive ...
arXiv Quantum Physics
arXiv:2604.03726v1 Announce Type: new Abstract: High-fidelity quantum operations require the system dynamics to be strictly confined to the computational subspace. In practice, however, control fields inevitably couple to leakage levels, giving rise to quantum state leakage th...
arXiv Quantum Physics
arXiv:2604.03731v1 Announce Type: new Abstract: Finding the ground state of complex quantum systems remains a central challenge in many-body physics, quantum chemistry, and combinatorial optimization, due to the exponential growth of the Hilbert-space dimension and the entangl...
arXiv Quantum Physics
arXiv:2604.03744v1 Announce Type: new Abstract: Quantum entanglement plays a fundamental role in quantum cryptography and computation. An important example of quantum entanglement can be found in the correlations of Einstein, Podolsky, and Rosen (EPR). However, despite the ple...
arXiv Quantum Physics
arXiv:2604.03778v1 Announce Type: new Abstract: It was recently shown that Newtonian dynamics of macroscopic particles can be derived from unitary Schr\"odinger evolution under an assumption on the system-environment interaction, namely that the interaction Hamiltonian effecti...
arXiv Quantum Physics
GPU-Accelerated Quantum Simulation: Empirical Backend Selection, Gate Fusion, and Adaptive Precision
arXiv:2604.03816v1 Announce Type: new Abstract: Classical simulation of quantum circuits remains indispensable for algorithm development, hardware validation, and error analysis in the noisy intermediate-scale quantum (NISQ) era. However, state-vector simulation faces exponent...
arXiv Quantum Physics
arXiv:2604.03838v1 Announce Type: new Abstract: Universal photon blockade in a two-mode Jaynes-Cummings model incorporating third-order Kerr nonlinearity is demonstrated with a single two-level atom coupled to a waveguide microcavity. Realization of this universal photon block...
arXiv Quantum Physics
arXiv:2604.03884v1 Announce Type: new Abstract: Violation of the Clauser-Horne-Shimony-Holt (CHSH) inequality certifies genuine quantum correlations. In this work, we formalize in Lean 4 the rigidity theorem -- any strategy achieving near-optimal CHSH value must be locally iso...
arXiv Quantum Physics
arXiv:2604.03951v1 Announce Type: new Abstract: In superconducting quantum circuits, decoherence improvements are frequently obtained through process interventions that simultaneously modify surface chemistry, microstructural topology, and device geometry, leaving mechanistic ...
arXiv Quantum Physics
arXiv:2604.03954v1 Announce Type: new Abstract: We present an analytical theory for the most subradiant modes in a finite one-dimensional emitter array coupled to either an ideal or a nonideal waveguide. Using an effective non-Hermitian Hamiltonian together with a Bragg-edge o...
arXiv Quantum Physics
arXiv:2604.03990v1 Announce Type: new Abstract: Entropic uncertainty relations provide an information-theoretic framework for quantifying the fundamental indeterminacy inherent in quantum mechanics. We propose more stringent quantum-memory-assisted entropic uncertainty relatio...
arXiv Quantum Physics
arXiv:2604.04046v1 Announce Type: new Abstract: We introduce the notion of dismagicker: non-Clifford unitary gate designed to reduce the non-stabilizerness (also called magic) of quantum many-body states. Although both entanglement and non-stabilizerness are fundamental quantu...
arXiv Quantum Physics
arXiv:2604.04137v1 Announce Type: new Abstract: We find that reinforcement exponentially reduces computation time of the quantum search problem from $\sqrt{D}$ to $\ln D$ in a $D$-dimensional system. Therefor, a reinforced quantum search is expected to exhibit an exponentially...
arXiv Quantum Physics
arXiv:2604.04143v1 Announce Type: new Abstract: The development of quantum networks (QNs) relies on efficient mechanisms for distributing entanglement among multiple quantum users (QUs) under practical system constraints. This paper investigates the problem of entanglement rat...
arXiv Quantum Physics
arXiv:2604.04164v1 Announce Type: new Abstract: Mutually Unbiased Bases (MUBs) constitute a fundamental geometric structure in quantum theory, known for providing an optimal measurement scheme for quantum state tomography. In prime and prime-power dimensions, analytical constr...
arXiv Quantum Physics
arXiv:2604.04205v1 Announce Type: new Abstract: Unitary $k$-designs are central to quantum information and quantum many-body physics as efficient proxies for Haar-random dynamics. We study how chaotic Hamiltonian evolution can generate unitary $k$-designs. Standard approaches ...
arXiv Quantum Physics
arXiv:2604.04292v1 Announce Type: new Abstract: Parametrised quantum circuits are a central framework for near term quantum machine learning. However, it remains challenging to determine in advance how architectural choices, such as encoding strategies, gate placement, and ent...
arXiv Quantum Physics
arXiv:2604.04298v1 Announce Type: new Abstract: Beyond ground state energy estimation, quantum phase estimation (QPE) applied to many-electron systems has the potential to output a projection on the ground state, that would enable the evaluation of observables other than the e...
arXiv Quantum Physics
arXiv:2604.04375v1 Announce Type: new Abstract: A common view in monitored quantum dynamics is that local measurements suppress entanglement growth. We show that this intuition can fail in a one-dimensional spinful fermionic chain governed by a BCS Hamiltonian with pairing str...
arXiv Quantum Physics
arXiv:2604.04437v1 Announce Type: new Abstract: Quantum clock synchronization (QCS) aims to establish a shared temporal reference between distant nodes by exploiting uniquely quantum phenomena such as entanglement, single-photon interference, and quantum correlations. In contr...
arXiv Quantum Physics
arXiv:2604.04438v1 Announce Type: new Abstract: Quantum simulation and computing traditionally has been based on two main paradigms, namely, digital and analog. In the digital paradigm, usually single and two-qubit gates (where qubit is an acronym for quantum bit) are employed...
arXiv Quantum Physics
arXiv:2604.04454v1 Announce Type: new Abstract: Characterizing quantum states is essential for validating quantum devices, yet conventional quantum state tomography becomes prohibitively expensive as system size grows. Direct tomography offers a distinct route by enabling sele...
arXiv Quantum Physics
A Demon that remembers: An agential approach towards quantum thermodynamics of temporal correlations
arXiv:2604.04462v1 Announce Type: new Abstract: This thesis develops a decision-theoretic framework for extracting thermodynamic work from temporal correlations in quantum systems. We model a classical agent -- lacking quantum memory -- performing adaptive work extraction thro...
arXiv Quantum Physics
arXiv:2604.04570v1 Announce Type: new Abstract: We formulate a global-position colored-permutation encoding for the capacitated vehicle routing problem. Each of the $K$ vehicles selects a disjoint partial permutation, and the sum of these $K$ color layers forms a full $n\times...
arXiv Quantum Physics
arXiv:2604.04600v1 Announce Type: new Abstract: Assembling large-scale, defect-free Rydberg atom arrays is a key technology for neutral-atom quantum computation. Dynamic holographic optical tweezers enable the assembly and reconfiguration of such arrays, but phase mismatches b...
arXiv Quantum Physics
arXiv:2604.04685v1 Announce Type: new Abstract: We propose a quantum measurement-based framework for probabilistic transformation of grayscale images using adaptive positive operator-valued measures (POVMs). In contrast, to existing approaches that are largely centered around ...
arXiv Quantum Physics
arXiv:2604.04691v1 Announce Type: new Abstract: The phenomenon of interaction-free measurement (IFM) enables the probabilistic detection of an absorbing object with reduced photon absorption. We report the experimental implementation of a simultaneous IFM of multiple objects u...
arXiv Quantum Physics
arXiv:2604.04699v1 Announce Type: new Abstract: Theories of the measured homodyne current generated by a stochastic Schr\"odinger equation (SSE) can be tested in a simulation of the Einstein-Podolsky-Rosen (EPR) correlations for a two-mode squeezed state. We carry out such a s...
arXiv Quantum Physics
arXiv:2604.04761v1 Announce Type: new Abstract: The phrase ``buy a quantum computer'' hides several different procurement problems. An institution may be seeking cloud access for teaching, reserved capacity for research, a local instrument for hardware training, an optimizatio...
arXiv Quantum Physics
arXiv:2604.04786v1 Announce Type: new Abstract: This paper presents a quantum search approach to combinatorial constraint satisfaction problems, demonstrated through the generation of magic squares. We reformulate magic square construction as a quantum search problem in which ...
arXiv Quantum Physics
arXiv:2604.04789v1 Announce Type: new Abstract: PulsePol is an elegantly designed pulse-sequence-based quantum control scheme that enables polarization transfer between electron and nuclear spins, for example, in nitrogen-vacancy (NV) centers. However, previous analyses of Pul...
arXiv Quantum Physics
arXiv:2604.04816v1 Announce Type: new Abstract: Contextuality and nonlocality are distinct manifestations at the foundation of quantum mechanics, yet their coexistence within a single quantum state remains subtle. In a hybrid CHSH--KCBS scenario involving the entanglment of a ...
Quantum Computing Report
Podcast with Mathematician Gil Kalai from Reichman University and the Hebrew University of Jerusalem
Yuval Boger interviews mathematician Gil Kalai about his long-standing skepticism regarding scalable quantum computing. Kalai explains two main arguments behind his theory: correlated noise that may defeat quantum error correction and complexity-based limits on NISQ devices ac...
Quantum Computing Report
Q-Factor, a Tel Aviv-based quantum hardware startup, has exited stealth with $24 million (USD) in seed funding to develop a million-qubit neutral atom quantum computer. The investment round was led by NFX and TPY Capital, with significant participation from Intel Capital, Kore...
Quantum Computing Report
IQM Quantum Computers, in collaboration with Fraunhofer FOKUS, has announced a major update to the Eclipse Qrisp framework, achieving the first full gate-level compilation of Shor’s algorithm at a cryptographically relevant scale of 2048-bit keys. While previous resource estim...
Quantum Computing Report
Dr. Dominic Williamson (University of Sydney) and Theodore J. Yoder (IBM) have introduced a "gauging" procedure for fault-tolerant logical measurement in quantum error-correcting codes. Published in Nature Physics, the research was developed during Williamson’s industrial plac...
Quantum Computing Report
Postquant Labs has officially launched the public testnet for Quip.Network, a decentralized platform designed to bridge the gap between quantum hardware and blockchain infrastructure. With over 13,000 early sign-ups, the network operates as a dual-layer ecosystem: a "Compute L...
Quantum Computing Report
Large-scale classical simulation of IQPE quantum circuits demonstrated in this work. Larger qubit counts and more Hamiltonian terms result in deeper circuits and longer simulation times. Credit: QIQB, The University of Osaka Osaka University’s Center for Quantum Information an...
Quantum Computing Report
Rigetti Computing (Nasdaq: RGTI) has officially expanded its on-premises footprint with the sale of a 9-qubit Novera™ QPU to the University of Saskatchewan (USask). This acquisition marks a historic milestone as USask becomes home to the first university-owned and operated, ve...
Quantum Computing Report
Infleqtion (NYSE: INFQ), a specialist in neutral-atom quantum technology, and Safran Electronics & Defense have announced the commercial availability of a quantum-enabled precision timing solution. The system integrates Infleqtion’s Tiqker™ quantum optical clock with Safra...
Quantum Computing Report
SpinQ Technology, a Shenzhen-based provider of full-stack quantum solutions, has completed a 600 million Chinese Yuan ($87.2M USD) Series C+ financing round. This brings the company’s total Series C funding to nearly 1 billion Chinese Yuan ($145.3M USD) within the first quarte...
Quantum Computing Report
Diagram of a distance‑7 rotated surface code with 97 physical qubits (49 data qubits + 48 measurement qubits) modelled by the team. Grey nodes are data qubits; labeled circles are ancillas measuring X- or Z-type checks on neighboring data qubits. Edge colors encode the residua...
The Quantum Insider
Insider Brief PRESS RELEASE — UK-based quantum technology company Moth has announced two senior hires as it expands its operations in the United States, marking a significant step in its mission to make quantum computing accessible to businesses and consumers. ...
The Quantum Insider
Insider Brief Quantum computing is shifting from a theoretical pursuit to a strategic priority for the energy sector as rising demand for compute power reshapes infrastructure, policy and investment decisions, according to a new report from S&P Global Energy. The report, a...
The Quantum Insider
Insider Brief PRESS RELEASE — IQM Quantum Computers, a global leader in superconducting quantum computing, today announced a commercial milestone to deploy a hybrid integrated quantum computer at Galaxy Systemy Informatyczne Sp. z o.o., marking its first deployment in a ...
The Quantum Insider
Insider Brief PRESS RELEASE — Delft Circuits today announces the appointment of Karen Keenan as Chief Operating Officer (COO), marking a key step in scaling the company into a global quantum I/O hardware manufacturing platform. Karen succeeds Maarten Hendriks, who will t...
The Quantum Insider
Insider Brief For nearly a century, scientists have been searching for evidence of dark matter, an invisible substance they believe makes up most of the mass of the universe. Such a discovery could lead to a greater understanding of our universe and how it works. But finding t...
The Quantum Insider
Insider Brief PRESS RELEASE — BTQ Technologies Corp. (“BTQ” or the “Company”) (Nasdaq: BTQ) (CBOE CA: BTQ), a global quantum technology company focused on securing mission-critical networks, today announced the publication of a landmark resea...
The Quantum Insider
Insider Brief PRESS RELEASE — In August 2024, the National Institute of Standards and Technology finalized the first three post-quantum cryptography standards — FIPS 203, 204, and 205 — after an eight-year global evaluation process. In January 2027, the NSA’s CNSA ...
The Quantum Insider
PRESS RELEASE — Q.ANT, a leading provider of photonic processors for energy-efficient high-performance computing and artificial intelligence, is strengthening its leadership team with a strategic new appointment: Michael Krueger started in the newly created position of V...
The Quantum Insider
Insider Brief PRESS RELEASE — Quantum computers are often described as the supercharged engines of the future — machines capable of solving certain problems that are classically intractable for today’s most powerful computers. But there’s a catch: even the most advanced ...
The Quantum Insider
Insider Brief Solana’s push toward quantum-resistant security could sharply reduce its transaction speeds, highlighting a growing trade-off between future-proofing crypto networks and maintaining performance. Solana has built its reputation on speed, processing transactions fa...