Researchers developed practical zero-noise extrapolation techniques for quantum annealing that successfully mitigate both thermal and non-thermal errors in quantum systems without additional qubit overhead, demonstrated through experiments on a transverse-field Ising spin chain that aligned well with theoretical predictions.
Researchers have demonstrated circuit-based leakage-detection units that nondestructively identify atom-loss errors in neutral-atom quantum computers with 93.4% accuracy, including a “swap” variant that exchanges data and ancilla atoms, enabling quantum information to potentially outlive individual atoms in the quantum register.
Researchers theoretically demonstrate that Floquet Majorana fermions in periodically driven topological superconductors create 4π-periodic Josephson currents with amplitudes that can be tuned by aligning chemical potentials with drive frequency harmonics, yielding a novel “Josephson Floquet sum rule.”
Time interfaces in materials with suddenly changing refractive indices create unique quantum optical phenomena including photon-pair production and destruction, tunable photon statistics, and opportunities for quantum state engineering.
Amazon Web Services has unveiled Ocelot, a groundbreaking quantum chip that uses cat qubits and bosonic quantum error correction to significantly reduce resource requirements, achieving bit-flip times approaching one second while requiring only one-tenth the resources of traditional approaches, potentially revolutionizing the path to commercially viable quantum computing.
Researchers successfully benchmarked quantum gates up to 52 qubits using a character-average benchmarking protocol, achieving a 63.09% ± 0.23% fidelity for a 44-qubit parallel CZ gate while demonstrating that optimizing global gate fidelity, rather than individual gate fidelities, yields superior performance by accounting for inter-gate correlations.
PQComb revolutionizes quantum information processing by employing parameterized quantum circuits to efficiently transform quantum processes, demonstrating significant improvements in resource efficiency and noise resilience while solving previously intractable problems in quantum unitary transformations.
Researchers from the University of Regensburg and the University of Michigan discovered that chromium sulfide bromide functions as a quantum “miracle material” capable of encoding information in multiple forms (charge, light, magnetism, and vibrations) while its unique magnetic properties confine excitons to single layers or lines, significantly extending quantum information longevity and potentially enabling rapid conversion between photon and spin-based quantum information.
Scientists at North Carolina State University have developed a groundbreaking light-driven method to precisely tune quantum dots’ optical properties through a microfluidic system, offering a faster, more energy-efficient, and sustainable alternative to traditional chemical modification techniques for applications in LEDs, solar cells, displays, and quantum technologies.
An international research team has developed a groundbreaking technique to integrate superconductors with semiconductors by patterning platinum on germanium and heating it to form a superconducting alloy, demonstrating coherent quantum states that could enable hybrid quantum processors combining the scalability of semiconductor qubits with the long-range connectivity of superconducting circuits.
A QuTech research team demonstrated initialization, readout, and universal control of four qubits created from eight germanium quantum dots, achieving quantum information transfer with 75% Bell state fidelity and establishing a versatile platform for quantum computing advancement.
Microsoft has demonstrated the world’s first topological qubit using Majorana Zero Modes in specially-engineered topoconductor materials, achieving measurement-based control through quantum dot interactions while securing DARPA support to build a fault-tolerant prototype that could scale to one million qubits and revolutionize scientific discovery.
Using Quobly’s Strategy to Build Qubits With FD-SOI Technology, Readout Architecture ‘Provides a Path to Low Power and Scalable Quantum’ ICs
The research demonstrates how quantum state tomography can reveal the full quantum characteristics of photoelectrons emitted from atoms, showing pure quantum states in helium but mixed states in argon due to spin-orbit coupling, thus bridging photoelectron spectroscopy with quantum information science.
A quantum circuit refrigerator based on photon-assisted electron tunneling can effectively cool and stabilize Kerr-cat qubits by providing tunable dissipation while preserving their advantageous error-bias characteristics through quantum interference suppression of unwanted bit flips.
ISTA physicists have developed a breakthrough method to connect superconducting qubits using fiber optics instead of traditional electrical signals, significantly reducing cooling requirements and potentially enabling the scaling and networking of quantum computers by converting optical signals to microwave frequencies that qubits can process.
Scientists have proven that Maxwell’s Demon cannot violate the second law of thermodynamics in any quantum scenario, as the energy gains from information-based sorting must always be balanced by the energy costs of measurement and memory erasure, regardless of how these processes are implemented.
A groundbreaking quantum cooling protocol demonstrates how a macroscopic oscillator can mediate between a single-probe spin and a spin ensemble, achieving ground-state cooling through weak dispersive coupling and measurement feedback, with promising applications in quantum technology and remote sensing.
Researchers have presented an on-chip temporal multiplexing scheme utilizing Thin-Film Lithium Niobate (TFLN) photonics.
Researchers have showed that a microscopic parametrization of quantum gates under time-correlated noise on the driving phase, motivated by recent experiments with trapped-ion gates, enables a more efficient version of GST.
Physicists achieved a quantum computing breakthrough by successfully connecting separate quantum processors through photonic links, enabling quantum teleportation of logical gates between modules and demonstrating the first distributed quantum computer system, which could potentially scale up without the limitations of cramming millions of qubits into a single device.
A team has reported on the first demonstration of precise control of single photon states on an 11-dimensional continuously-coupled programmable waveguide array.
Scientists have developed a groundbreaking device that uses dual-colored laser beams to levitate and study pairs of electrically charged glass nanospheres.
A groundbreaking discovery in quantum physics has revealed a novel electronic state in twisted graphene layers, where electrons exhibit the paradoxical behavior of being simultaneously frozen yet capable of conducting current along edges without resistance.
This research explores how atoms interact through light exchange to enhance quantum entanglement, focusing on a novel approach using multi-level atomic systems.