'Rainbow-on-a-chip' could help unlock 6G networks and precision timing for quantum technologies
Loughborough University physicists and an international team have demonstrated that a grain-of-rice-sized microchip can be used to produce a spectrum of precisely spaced frequencies of light, which is then converted into multiple high-frequency electromagnetic signals known as millimeter waves.
Magnetically levitated quantum bit could address design flaws
Researchers at the FAMU-FSU College of Engineering and the National High Magnetic Field Laboratory, headquartered at Florida State University, have designed a new quantum computing architecture that uses magnetic levitation to smooth over design flaws in the intricate components necessary to run a quantum computer.
When different materials transition from one phase to another, such as water coming to a boil or a magnet losing its ability to attract metals, something remarkable can happen: They begin to behave identically, following the same mathematical rules.…
"Physicists call this trait universality—the messy, microscopic detail…
Turning a quantum battery's environmental sensitivity into an advantage
Quantum batteries, devices that store energy by exploiting quantum mechanical phenomena, could, in principle, be charged faster and more efficiently than classical ones.…
Despite their potential, connecting these batteries to chargers is kno…
This can reduce useful work, or the energy available to complete a tas…
Search in strange quark sector reveals new particle possibilities
Despite science's best efforts to classify the vast menagerie of subatomic particles discovered over the past few decades, some exotic varieties defy explanation.…
Now, nuclear physicists at the U.
Department of Energy's Thomas Jefferson National Accelerator Facility …
Quantum simulators gain quantitative error bars in 51-ion test
In the coming years, increasingly larger and more powerful quantum systems are expected to tackle problems that are difficult or impossible to solve using conventional computers.…
However, the more powerful quantum simulations become, the more diffic…
Where classical simulation is still feasible, results can be cross-che…
Krypton gas emerges as a new ingredient for quantum computing
To commercialize quantum computing, manufacturers need high-quality superconducting materials for microchips, but they also require a reliable, sustainable nanofabrication process.…
Tantalum is a corrosion-resistant metal that meets the first criterion…
That's because it has to be deposited on a substrate at temperatures t…
The global race to make a practical quantum computer just took a big leap forward
In the global race to build bigger and better quantum computers, researchers have taken a step forward. A new machine called Helios is radically different from other quantum computers.
A new approach to building noise-resistant quantum sensors
Quantum sensors, devices that collect measurements by exploiting quantum-mechanical phenomena, could potentially detect extremely weak magnetic, gravitational and electromagnetic signals with greater sensitivity than classical sensors.…
Some quantum sensors leverage entanglement, a phenomenon that prompts …
Gluons may play a central role in baryon number conservation—and matter's stability
New results from the STAR detector at the Relativistic Heavy Ion Collider (RHIC) suggest that gluons, the glue-like particles that hold quarks together inside protons, play a central role in the conservation of baryon number—an essential part of a particle's quantum identity.
Physicists predict a new form of quantum matter that holds itself together
Researchers at Monash University have predicted a new type of quantum matter that challenges decades of thinking about how ultracold particles behave.…
The paper, "Quantum droplets in a resonant Bose-Fermi mixture," is pub…
Anomalous quantum oscillations reveal new physics in a topological insulator
A study has been published in Nature Communications that identifies an unusual regime of quantum oscillations in a three-dimensional topological insulator.…
The results show that, when subjected to temperatures near absolute ze…
Cesium atoms and quantum dots generate indistinguishable photons for modular quantum networks
Large-scale quantum communication networks require both reliable quantum memories and coherent single-photon sources that can exchange quantum information efficiently.…
A coherent source of single photons with narrow linewidth, high bright…
While a variety of single-photon sources, such as quantum dots (QDs) a…
Two independent studies push semiconductor qubits towards practical scales
Semiconductor spin qubits are one of the most promising building blocks for future quantum computers, but turning them into a working, large-scale quantum computer has so far proven difficult.…
For now, two big questions remain open: how to connect qubits that are…
Diamond's newfound defect may tame vibrations that hinder quantum light sources
Researchers in the Department of Electrical and Computer Engineering at the University of Illinois Urbana-Champaign have discovered a new type of quantum light emitter in diamonds that could help overcome a number of challenges facing quantum technologies.
IBM and researchers from the University of Chicago announced a demonstration in quantum computing that meets the fundamental criteria for "quantum advantage"—the point where quantum computers can be confirmed to have outperformed classical computers on trusted computations.