⚡ Latest Articles
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...
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...
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...
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...
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...
Phys.org Quantum
Mid-circuit measurements are one of the biggest practical hurdles in quantum error correction on encoded qubits. Researchers in Innsbruck and Aachen have now proposed and experimentally demonstrated that a universal...
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...
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...
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:...
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...
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...
arXiv Quantum
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...
arXiv Quantum
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...
arXiv Quantum
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...
arXiv Quantum
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...
arXiv Quantum
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...
arXiv Quantum
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...
arXiv Quantum
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...
arXiv Quantum
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...
arXiv Quantum
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...
arXiv Quantum
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...
arXiv Quantum
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...
arXiv Quantum
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...
arXiv Quantum
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...
arXiv Quantum
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...
arXiv Quantum
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,...
arXiv Quantum
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...
arXiv Quantum
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...
arXiv Quantum
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...
arXiv Quantum
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...
arXiv Quantum
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...
arXiv Quantum
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...
arXiv Quantum
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...
arXiv Quantum
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...
arXiv Quantum
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...
arXiv Quantum
arXiv:2604.03951v1 Announce Type: new
Abstract: In superconducting quantum circuits, decoherence improvements are frequently obtained through process interventions that simultaneously modify surface chemistry,...
arXiv Quantum
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...
arXiv Quantum
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...
Phys.org Quantum
Most people think of diamonds as high-end adornments. Not Ania Bleszynski Jayich. The UC Santa Barbara physicist sees diamonds, which she grows in the UC Quantum Foundry, as a potentially powerful foundation for quantum...
Phys.org Quantum
Quantum mechanics tells us that a particle can never be perfectly still. But how precisely can it be oriented? A research team at the University of Vienna, together with colleagues at TU Wien and Ulm University, has now...
Phys.org Quantum
The electrons that power our society flow left and right through the circuitry in our electronics, back and forth along the transmission lines that make up our power grid, and up and down to light up every floor of...
Phys.org Quantum
A research team has, for the first time in the world, elucidated the microscopic mechanism by which quantum order is lost and collapses in "open quantum environments" existing in nature. Since perfectly isolated quantum...
Phys.org Quantum
Detecting a single particle of light is hard; detecting a single microwave photon is even harder. Microwave photons, the tiny packets of electromagnetic radiation used in current technologies like Wi-Fi and radar, carry...
Phys.org Quantum
Can a handful of atoms outperform a much larger digital neural network on a real-world task? The answer may be yes. In a study published in Physical Review Letters, a team led by Prof. Peng Xinhua and Assoc. Prof. Li...
Phys.org Quantum
Quantum states are notoriously fragile, and can be destroyed simply through interactions, measurements, and exposure to their surrounding environments. In a new theoretical study published in Physical Review X, Rohan...
Phys.org Quantum
Quantum mechanics is extremely successful at describing the behavior of matter at the atomic level. This success forces one to accept that certain aspects of physical reality go far beyond our intuition. Among these,...
Phys.org Quantum
Researchers at IPhT (CEA, CNRS) and the Universitat Autònoma de Barcelona have shown that gravity—and with it, supersymmetry—emerge as logical necessities whenever a massive spin-3/2 particle exists in nature. Two...
Phys.org Quantum
Imagine you're trying to build a very long, complicated chain of dominoes. The aim is that each domino hits the next one perfectly, all the way down the line, producing an amazing result at the end. A quantum circuit is...
Phys.org Quantum
A University of Sydney quantum physicist has developed a new approach to quantum error correction that could significantly reduce the number of physical qubits required to build large-scale, fault-tolerant quantum...
Phys.org Quantum
A joint research team between the Center for Quantum Information and Quantum Biology (QIQB) at The University of Osaka and Fixstars Corporation has demonstrated one of the world's largest classical simulations of...
Phys.org Quantum
Quantum computers of the future may be closer to reality thanks to new research from Caltech and Oratomic, a Caltech-linked start-up company. Theorists and experimentalists teamed up to develop a new approach for...
Phys.org Quantum
Researchers at the Technion—Israel Institute of Technology have, for the first time, measured the temporal duration of individual pulses of an extraordinary form of quantum light known as bright squeezed vacuum (BSV)....
Phys.org Quantum
In the air people breathe, the water on Earth, the stars in the sky and more, atoms are the building blocks that make up the universe. Understanding the structure of the atomic nucleus is crucial for research with...
Phys.org Quantum
A research team led by Professor Jiwoong Yang of the Department of Energy Science and Engineering at DGIST has developed next-generation optical sensor technology capable of precisely detecting not only the intensity...
Phys.org Quantum
Scientists in the Riccio College of Engineering at the University of Massachusetts Amherst and the University of California Santa Barbara have demonstrated key laser and ion trap components necessary to help drastically...
Phys.org Quantum
Quantum physicists at ANU have observed atoms entangled in motion. "It's really weird for us to think that this is how the universe works," says Dr. Sean Hodgman from the ANU Research School of Physics. "You can read...
Phys.org Quantum
When lasers were invented in the 1960s, they opened new avenues for scientific discovery and everyday applications, from scanners at the grocery store to corrective eye surgery. Conventional lasers control...
Phys.org Quantum
In quantum technologies, everything depends on the ability to detect the properties carried by a single photon. But in the real world, that photon of interest is often buried in a sea of unwanted light—a true "needle in...
Phys.org Quantum
Silicon is ubiquitous in modern electronics, and now it is becoming increasingly useful in quantum computing. In particular, silicon's compatibility with existing chip technology and its long coherence times in...
Phys.org Quantum
Physicists have developed a new theoretical framework which unifies a wide array of seemingly unrelated "Mpemba effects": counterintuitive cases where systems driven further from equilibrium relax faster than those...
Phys.org Quantum
Quantum computers, systems that process information leveraging quantum mechanical effects, could outperform classical computers on some computationally demanding tasks. Despite their potential, as the size of quantum...
Phys.org Quantum
Quantum technologies, devices that can process, store, or detect information leveraging quantum mechanical effects, could outperform classical devices in some tasks or scenarios. Despite their potential, verifying that...
Phys.org Quantum
Waterloo scientists have developed a new way to understand how the universe began, and it could change what we know about the Big Bang and the earliest moments of cosmic history. Their work suggests that the universe's...
Phys.org Quantum
Can light behave like a whirlwind? It turns out it can—and such "optical tornadoes" have now been created in an extremely small structure by scientists from the Faculty of Physics at the University of Warsaw, the...
Phys.org Quantum
Researchers at the Würzburg site of the Cluster of Excellence ctd.qmat have succeeded in transferring the topological quantum Hall and spin Hall effects to a hybrid light-matter system by harnessing targeted material...
Phys.org Quantum
Dark matter, a type of matter that does not emit, reflect or absorb light, is predicted to account for most of the matter in the universe. As it eludes common experimental techniques for studying ordinary matter,...