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.
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.
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 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.
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.
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 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.
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.
UCL researchers have developed a groundbreaking technique using arsenic atoms in silicon that achieves a 97% success rate for single-atom placement (compared to phosphorus’s 70%), potentially solving quantum computing’s twin challenges of error rates and scalability through scanning tunneling microscopy hydrogen resist lithography.
A landmark study demonstrates fully industrialized fabrication of high-performance silicon quantum dots using 300mm semiconductor wafer processes, achieving impressive metrics including sub-2μeV charge noise, 1-second spin relaxation times, and 99% gate fidelities, while incorporating monolithic cobalt micromagnets, thus establishing a viable pathway for scaling quantum computing through existing semiconductor manufacturing infrastructure.
Harvard scientists have developed a groundbreaking photon router that creates an optical interface between light signals and superconducting microwave qubits, potentially solving a major quantum computing challenge by enabling different quantum systems to communicate efficiently without bulky wires, thus bringing distributed, fiber-optic-based quantum computers closer to reality.
A QuTech-led research team successfully created a three-site Kitaev chain in a hybrid InSb/Al nanowire that demonstrates enhanced stability of Majorana zero modes compared to two-site chains, marking significant progress toward scalable topological quantum computing.
Researchers have demonstrated that quantum information encoded in topological skyrmions remains resilient to environmental noise even as entanglement deteriorates, representing a breakthrough “digitization” approach that could revolutionize practical quantum technologies without requiring complex compensation strategies.
A groundbreaking compact solid-state laser system generates 193-nm coherent light for semiconductor lithography while also producing the first-ever 193-nm vortex beam carrying orbital angular momentum, offering superior coherence and potential applications in wafer processing, defect inspection, and quantum technologies.
Researchers from the University of Innsbruck and the University of Waterloo have achieved a breakthrough in quantum computing by using qudits (quantum units with multiple values) instead of traditional qubits to efficiently simulate quantum electrodynamics in two dimensions, demonstrating magnetic field interactions between particles and opening new possibilities for solving previously intractable problems in particle physics.
QuTech researchers, collaborating with Fujitsu and Element Six, have achieved a significant quantum computing milestone by demonstrating diamond spin-based quantum gates with error rates below 0.1%—satisfying a critical threshold for quantum error correction and bringing us one step closer to scalable quantum computation.
Researchers have successfully created quantum holograms using metasurfaces, enabling unprecedented control over entangled photon pairs where the polarization of one photon can selectively erase holographic content in its partner, demonstrating precise quantum control with applications in secure communication and anti-counterfeiting technology.
Researchers successfully observed “dissipative phase transitions” in quantum systems using a superconducting Kerr resonator at near-absolute zero temperatures, revealing phenomena like “squeezing,” metastability, and “critical slowing down” that could revolutionize quantum computing and sensing technologies through enhanced stability and precision.
D-Wave Quantum Inc. has achieved the world’s first demonstration of quantum computational supremacy on a useful real-world problem, using their Advantage2 prototype quantum annealer to perform complex magnetic materials simulations in minutes that would take a classical supercomputer nearly one million years and consume more than the world’s annual electricity.
The researchers propose a digital-analog quantum computing approach using superconducting circuits to efficiently simulate the Hubbard-Holstein model of fermion-boson interactions with high fidelity, outperforming purely digital methods and offering applications in materials science, chemistry, and high-energy physics.
Lead halide perovskite quantum dots covered with stacked phenethylammonium ligands exhibit nearly non-blinking single photon emission with high purity (~98%) and extraordinary photostability (12+ hours), solving critical surface defect issues through π-π stacking interactions that create a stabilizing epitaxial ligand layer, enabling reliable room-temperature quantum emission for advanced computing and communication applications.