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 groundbreaking theory bridges quantum mechanics and general relativity by treating the spacetime metric as a quantum operator and introducing an entropy-based gravitational action that yields modified Einstein equations with an emergent cosmological constant, potentially explaining cosmic expansion and dark matter through a novel auxiliary “G-field.”
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.
Researchers have achieved a major quantum computing breakthrough by using a 56-qubit quantum computer to generate certifiably random numbers verified by classical supercomputers, marking a shift from theoretical quantum advantage to practical application with significant implications for cryptography, security, and fairness.
Princeton physicists accidentally discovered and directly visualized Hofstadter’s butterfly—a theoretical fractal pattern of electron energy levels predicted in 1976—using scanning tunneling microscopy on twisted bilayer graphene, revealing not only the long-sought fractal energy spectrum but also new quantum phenomena driven by electron interactions beyond Hofstadter’s original calculations.
At first glance, a system consisting of 51 ions may appear simple. But even if these charged atoms can only assume two different states, there will be more than two quadrillion (1015) different configurations which the system can […]
Researchers have introduced an inductive n-qubit pure-state estimation method based on projective measurements on mn + 1 separable bases or m entangled bases plus the computational basis, with m ≥ 2. The method exhibits a favorable scaling in the number of qubits compared to […]
A new project undertaken by a University of Birmingham researcher at the UK Quantum Technology Hub Sensors and Timing along with colleagues in the School of Engineering will help to facilitate greater sustainability for future […]
Scientists have demonstrated that wires more than 100 times thinner than a human hair can act like a quantum one-way street for electrons when made of a peculiar material known as a topological insulator. The […]
Boson Sampling is a computational paradigm representing one of the most viable and pursued approaches to demonstrate the regime of quantum advantage. Recent results have shown significant technological leaps in single-photon generation and detection, leading […]
Researchers at the Max Planck Institute of Quantum Optics succeeded in massively improving the performance of a component that is crucial to optical quantum systems. Future quantum computers are expected not only to solve particularly […]
A new two-path-interference experiment has been designed at TU Wien that only has to measure one specific particle to prove quantum superposition. A single neutron is measured at a specific position — and due to […]
A team of researchers from Université Paris-Saclay, the University of Ulm and the Institute of Quantum Technologies has developed an on-chip circuit that produces up to six microwave photons at the same time. The circuit […]
The mixing of conduction band valleys plays a critical role in determining electronic spectrum and dynamics in a silicon nanostructure. Researchers have investigated theoretically how valley–orbit coupling affects the exchange interaction in a silicon double […]
Computational detective work by physicists has confirmed cerium zirconium pyrochlore is a 3D quantum spin liquid, a solid material in which quantum entanglement and the geometric arrangement of atoms cause electrons to fluctuate between quantum […]
Quantum entanglement is a key resource in quantum technology, and its quantification is a vital task in the current noisy intermediate-scale quantum (NISQ) era. Researchers have combined hybrid quantum-classical computation and quasi-probability decomposition to propose […]
A researcher at EPFL explored the relationship between entanglement and the wave-particle duality of each subsystem.
Researchers have developed a protocol for entanglement generation in the Quantum Internet that allows a repeater node to use n-qubit Greenberger-Horne-Zeilinger (GHZ) projective measurements that can fuse n successfully entangled links, i.e., two-qubit entangled Bell pairs shared across n network edges, […]
A collaboration between Harvard University with scientists at QuEra Computing, MIT, University of Innsbruck and other institutions has demonstrated a breakthrough application of neutral-atom quantum processors to solve problems of practical use. Previously, neutral-atom quantum […]
Researchers report a breakthrough in frequency up-conversion of single photons, based on a hollow-core Photonic Crystal Fiber (PCF) filled with hydrogen gas. First a spatio-temporal hologram of molecular vibrations is created in the gas by […]
Researchers at Stony Brook University report the formation of matter-wave polaritons in an optical lattice, an experimental discovery that permits studies of a central QIST paradigm through direct quantum simulation using ultracold atoms. The scientists […]
A new theorem from researchers at the RIKEN Center for Advanced Intelligence Project, Tokyo, and Keio University, Yokohama, provides an understanding of what types of long-range quantum entanglement survive at non-zero temperatures, revealing a fundamental […]
Researchers at University of Cologne have analyzed cutting-edge device structures of quantum computers to demonstrate that some of them are indeed operating dangerously close to a threshold of chaotic meltdown. The challenge is to walk […]
Determining whether a noisy quantum channel can be used to reliably transmit quantum information is a challenging problem in quantum information theory. This is because it requires computation of the channel’s coherent information for an […]
Developing non-classical light sources that can emit, on-demand, exactly one photon at a time is one of the main requirements of quantum technologies. But although the first demonstration of such a “single photon emitter”, or […]
Researchers from QuTech, in collaboration with Fujitsu and Element Six, have demonstrated the fault-tolerant operation of a quantum bit using a quantum processor based on spin qubits in diamond. The team has realized a logical […]
A team led by the U.S. Department of Energy’s (DOE) Argonne National Laboratory has announced the creation of a new qubit platform formed by freezing neon gas into a solid at very low temperatures, spraying […]
Itaú Unibanco, the largest bank in Latin America, and QC Ware, a leading quantum software and services company, today announced the first results of a collaboration that is exploring quantum computing algorithms for the banking […]
Developing Quantum Key Distribution (QKD) has been recently directed toward distance extension and network expansion for real-world secure communications. Considering a recent report on a quantum communication network over 4,600 km, it seems that QKD networks […]
A team of physicists and mathematicians has discovered a new connection between superposition and entanglement that does not assume that quantum theory is correct. While quantum theory has proven to be supremely successful since its […]