The NA61/SHINE experiment at CERN discovered an unexpected 18% overproduction of charged kaons in high-energy collisions between argon and scandium nuclei, challenging the fundamental assumption of flavor symmetry in particle physics and potentially pointing to new physics beyond the Standard Model.
MIT physicists have captured the first-ever direct images of individual atoms interacting freely in space, revealing quantum behaviors like bosons bunching into waves and fermions forming pairs, confirming decades of theoretical predictions and opening new possibilities for visualizing complex quantum phenomena.
Scientists have achieved a major breakthrough in quantum technology by deriving an exact mathematical expression for entanglement distillation under specialized conditions, correcting flawed theories from two decades ago and advancing theoretical capabilities far beyond current experimental limitations.
Researchers successfully simulated Google’s 53-qubit Sycamore quantum circuit seven times faster than the original quantum computer using 1,432 GPUs and innovative tensor network algorithms, effectively refuting Google’s quantum advantage claim.
Scientists have discovered and experimentally confirmed the existence of “quadruplons,” genuine four-body quasi-particles consisting of two electrons and two holes tightly bound together in a monolayer semiconductor, which represent a fundamentally new type of matter excitation beyond previously known quasi-particles like excitons and bi-excitons.
Researchers have developed metaQctrl, a two-layer meta-reinforcement learning algorithm that significantly outperforms conventional methods in achieving high-fidelity quantum gates with fewer control pulses under uncertain conditions, potentially advancing practical quantum computing by maintaining 99.99% fidelity where traditional approaches fail.
This groundbreaking study reveals a fundamental trade-off in quantum machine learning between a model’s trainability and its privacy protection, demonstrating that quantum circuits with polynomial-sized dynamical Lie algebras (necessary for efficient training) inherently allow extraction of input data snapshots from gradients, while full input recovery depends on encoding circuit properties like high-frequency components and resistance to classical simulation.
Researchers discovered a fundamental trade-off between gradient measurement efficiency and expressivity in quantum neural networks, proposing the Stabilizer-Logical Product Ansatz as an optimal solution that exploits quantum circuit symmetry to achieve efficient training while maintaining performance.
This research demonstrates that state-of-the-art quantum annealing hardware with over 5,000 qubits and enhanced connectivity now achieves significantly higher accuracy (0.013% improvement) and dramatically faster solving times (6,561× speedup) compared to classical optimization methods on large-scale, dense combinatorial problems, finally realizing the long-promised quantum advantage for real-world applications.
The Dutch quantum ecosystem achieved a major milestone with the release of the Tuna-5 quantum computer through Quantum Inspire, showcasing an innovative open-architecture approach that integrates components from multiple Dutch startups and demonstrates how academic-industry collaboration can strengthen national quantum computing capabilities while paving the way for more powerful systems.
This paper completes Einstein, Podolsky, and Rosen’s famous 1935 thought experiment by demonstrating how quantum entanglement of position and momentum—where measuring one particle instantly reveals properties of its distant partner—can be physically created through a simple elastic collision between particles of unequal mass that are initially in squeezed quantum states.
The new automated “bandage-like” super-stabilizer approach for implementing surface codes on defective quantum lattices significantly outperforms previous methods by reducing disabled qubits by one-third and increasing code distance by 63% for a 2% defect rate, providing a crucial low-overhead solution for scaling up fault-tolerant quantum computing.
Researchers achieved a breakthrough in quantum communication by using common laser pulses to generate intrinsically synchronized single photons, eliminating time jitter issues and achieving coincidence rates over 100 times higher than previous methods across 50km of fiber, enabling practical measurement-device-independent quantum key distribution.
The paper introduces a novel quantum-classical uncertainty complementarity relation that serves as a superior steering witness, quantifies additional distillable coherence enabled by quantum steerability, functions as a complete entanglement measure for pure bipartite states, and establishes a deeper connection between quantum coherence and steering through the uncertainty principle.
Princeton researchers discovered unexpected chirality in a Kagome lattice material using specialized light measurements, resolving a quantum physics controversy and potentially advancing future quantum technologies while building on Princeton’s legacy of Nobel Prize-winning work in topological physics.
Squeezed light enables advanced quantum applications but faces practical challenges that the authors address through a novel radio-frequency heterodyne detection method with digital unitary transformations, successfully demonstrated over fiber channels for quantum key distribution and sensing networks without requiring complex stabilization systems.
MIT researchers have demonstrated potentially the strongest nonlinear light-matter coupling ever observed in a quantum system through their “quarton coupler” innovation, which could significantly accelerate quantum computing operations and readout speeds by creating coupling strength approximately 10 times greater than previous efforts.
This paper explores hybrid quantum-classical algorithms, specifically focusing on their application in quantum metrology. These Variational Quantum Algorithms (VQAs) show promise for implementation on early quantum devices that cannot yet run quantum error correction. While […]
QuTech researchers in Delft created a controlled system of three quantum dots that successfully demonstrated the properties of Majorana bound states—exotic quantum particles that could enable more stable quantum computing through their unique ability to be manipulated and moved between locations while maintaining resistance to errors.
Researchers at the University of Illinois Urbana-Champaign have achieved a breakthrough in quantum teleportation by using an indium-gallium-phosphide nanophotonic platform that dramatically improves quantum information transmission to 94% fidelity (compared to the theoretical limit of 33% with conventional methods), bringing practical quantum communication networks closer to reality.
Researchers demonstrated a novel technique for generating entangled photonic modes by continuously exciting a superconducting qubit with a coherent drive, creating perfectly orthogonal entangled states that can be transferred to distinct quantum memories for applications in quantum networks and distributed computing.
Quantum sensors with unprecedented 4D precision are revolutionizing particle physics by enabling researchers to track individual particles in both space and time, potentially uncovering new fundamental particles and dark matter components that have previously eluded detection in high-energy collider experiments.
Researchers achieved the first detection-loophole-free quantum steering demonstration in a fully integrated chip-fiber telecommunication system, using innovative phase-encoding measurements and a custom low-loss silicon chip to enable an unprecedented 1.25 GHz switching rate, marking a significant advancement toward practical quantum communication applications.
Researchers at the University of Liège developed a breakthrough method that accelerates the creation of quantum NOON states using ultra-cold atoms from minutes to just 0.1 seconds, making these previously inaccessible quantum superpositions practical for applications in quantum metrology and computing.
NASA’s Jet Propulsion Laboratory is developing the first-ever space-based quantum gravity sensor that uses ultra-cold atoms to detect minute gravitational variations from orbit, potentially revolutionizing how we map Earth’s hidden features and explore distant planets.
HZB researchers have developed a groundbreaking technique to read quantum spin states in diamonds using electrical signals instead of light, which could dramatically simplify quantum sensor and computing hardware by replacing complex optical components with straightforward electrical contacts.
Scientists at UBC’s Blusson Quantum Matter Institute have discovered that the metallic compound Ti4MnBi2 exhibits rare one-dimensional quantum magnetism with strongly entangled magnetic moments and conduction electrons, representing only the second known metallic system with confirmed one-dimensional magnetism and opening new possibilities for quantum computing and spintronics.
Erbium ions in silicon demonstrate unprecedented coherence properties with optical linewidths below 70 kHz and electron spin coherence times exceeding 0.8 ms, establishing a promising telecommunications-compatible platform for quantum information processing that leverages existing silicon nanofabrication technologies.
Quantum magnetometers leverage quantum particles’ unique properties to detect extremely small magnetic fields, with their ultimate sensitivity limits governed by quantum noise, parameter estimation theory, and energy resolution constraints that help define their true “quantumness.”
Chinese researchers achieved a groundbreaking advance in quantum photonics by generating a massive 60-mode entangled cluster state directly on a chip using optical microresonators and a multi-laser pump technique, creating high-quality quantum entanglement that could revolutionize chip-based quantum computers, secure communications, and advanced sensors.