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152 stories from Planck Standard. Latest: November 3, 2026.
Physicists used real-time feedback to track a drifting qubit frequency, dropping the average error rate from about 0.14% to 0.065% on a superconducting chip.
A German team's carbene molecule held its quantum spin for about 2.2 milliseconds and emitted light stable in frequency for more than an hour, a hurdle for solid-state qubits.
The Nature Physics result makes the uranium compound the leading candidate for a topological superconductor, a long-sought material for quantum computing.
The links moved quantum states between chips with 99% average accuracy and survived three warm-and-cool cycles, a step toward building quantum computers out of modules.
A theory paper in Physical Review Letters predicts that excitons in atomically thin semiconductors bind to anyons, shifting the light spectrum in a way that could locate them. Experiments have yet to test it.
German researchers cut the time of a single-qubit operation to a fraction of the usual speed by suppressing an overlooked error that appears when microwave pulses get strong.
Japanese physicists directly saw flux quanta created by absorbed light, a route to photon counters that skip the slow thermal wait of today's best detectors.
A São Paulo and Beijing team says an 'Andreev qubit' produces an oscillating current that reveals its own state, removing the need for auxiliary qubits in quantum readout.
A strontium ion carries the link and a calcium ion stores it, stretching entanglement across a fiber-connected network from milliseconds to more than ten seconds.
Hebrew University researchers measured a single magnetic vortex flipping between two positions and found it needs only about 5 times Landauer's limit, a million times less than a modern computer.
A Nature Physics paper turns a long-suspected 'Planckian' bound into a mathematical proof: no process, however much energy is pumped in, can settle a quantum system into a thermal state faster than temperature and two fundamental constants allow.
Rutgers and IBM researchers measured and reset qubits in real time nearly 5,000 times and found a sharp switch from chaotic to controllable behavior at a 50-50 balance.
A Science paper shows magic state cultivation working on real superconducting hardware, reaching fidelity of about 99.99%.
Erbium atoms in thin-film lithium niobate act as a photon memory that could be manufactured at scale, researchers at Urbana-Champaign report in Nano Letters.
Researchers traced the main source of errors in parallel control to a microwave side effect and fixed it with a calibration scheme that scales.
A new framework in Physical Review X classifies phases of matter in open, noisy systems, where the usual energy-gap approach fails.
Qubits stood in for a magnetic field and ion vibrations for matter, in a Nature Physics experiment that simulates lattice gauge theory, the framework used in particle physics.
The Nano Letters demonstration on thin-film lithium niobate is a step toward chip-scale quantum memories that could be manufactured at scale.
Tsinghua-led scanning-tunneling images show electronic stripes growing stronger at vortex cores, with one of two vortex types hosting the exotic particle that is its own antiparticle.
Mid-circuit measurements cut the depth needed to prepare colliding particles, and a heavy particle appeared in the simulated energy density in a Nature Physics paper.
The SHOQ design uses charge-neutral superfluid helium to shrug off the electromagnetic noise that plagues today's superconducting qubits.
A University of Surrey team proposes a device built on frictionless helium-3 that is immune to the electromagnetic noise that plagues today's qubits. No one has built it yet.
University of Vienna physicists report that a light-based quantum processor survived launch on a Falcon 9 and produced photon pairs and interference in space.
EPFL and Weizmann physicists measured e/4 charges in a special quantum state of gallium arsenide, a result that strengthens the case for a route to error-proof quantum computers.
Quantum jumps were seen in trapped ions in 1986 and in photons in 2007. Sound took another 19 years. The team paired a chip-scale resonator with a superconducting qubit that checked hundreds of times whether one phonon was still there.
The team set three records at once for circular Rydberg atoms, giant atoms that are the leading candidates for neutral-atom quantum computers. The trick was two transparent conductive plates that block the room's own microwave glow, an idea from the 1980s.
Marko Lončar's lab 'dressed' a silicon-vacancy spin with phonons instead of microwave pulses. The technique works inside the phononic cavities that would link nodes of a chip-scale quantum network, letting sound do both jobs at once.
A University of Chicago team laid out the blueprint in PRX Quantum. Helium-3 is a fermion, which means it obeys the rules that keep particles from crowding into the same state, and the group hopes to have single atoms in optical tweezers within a year or two.
The sideways shift depends only on the light's wavelength, not on how tightly the beam is focused. For trapped-ion quantum computers it is either a new source of error or a new way to couple qubits.
'Complement sampling' hands a computer one answer from set A and asks for one from set B. A classical computer can only guess. A trapped-ion processor used a 'swapper' circuit and won, despite the noise.
Instead of coaxing fragile quantum states into existence, physicists sent bright classical light through a random optical network and counted photons one at a time on the way out, exposing hidden multiphoton quantum behavior with 861 measurable components that survives noise and loss.
Bosonic codes store quantum information in microwave fields instead of single qubits, but shaping those states has been painfully slow. A new 'quantum lattice gate' set does it in a single period of the control signal, on hardware that already exists.
Physicists in Shanghai calculated that spin-orbit coupling — long treated as a fixed property of a material's atoms — weakens as temperature rises, closing the band inversion that makes topological states possible.
Okayama University physicists used nuclear magnetic resonance to find three distinct phases in potassium chromium arsenide, evidence that it is a spin-triplet superconductor — the type that could host particles useful for error-free quantum computing.
Photons from neutral atoms spaced micrometers apart were routed into parallel channels of a 32-channel waveguide array with almost no crosstalk, a step toward linking quantum computers together.
The 'arm qubit' design uses a quarton coupler to keep storage and communication apart. In simulation it holds state as long as the best existing designs while operating faster.
A single quantum thermal transistor needs three heat baths; ten of them needed thirty. Two physicists rewrote the wiring using 'thermal links' — and derived Kirchhoff's laws for heat along the way.
Instead of racks of room-temperature electronics feeding signals down cables, HRL Laboratories built a CMOS controller that sits next to the qubits in the cold and executes error correction on its own. Control errors dropped tenfold.
Writing in Nature, researchers report a two-qubit gate that operates in 500 nanoseconds and converts roughly 0.5% of its operations into flagged, detectable errors while leaving hidden errors below 0.1%.
Niobium diselenide is a promising two-dimensional superconductor that starts corroding the instant it meets oxygen. Researchers solved it by growing the crystal inside a gap less than a nanometer wide — under the protective layer instead of beneath it.
A team from IBM and the University of Chicago used 70 error-protected logical qubits to run a sampling problem that leading classical methods cannot practically reproduce, then supplied statistical proof that the machine's output was accurate. Verification has been the missing piece in every prior quantum-advantage claim.
Physicists in China mapped the 167-year-old math problem onto how a quantum system changes over time — and the signal collapsed exactly at the first five zeros of the zeta function.
Using tensor networks to compress the state of hundreds of entangled qubits, researchers cracked a quantum-dynamics calculation on ordinary hardware — matching a quantum computer's results and shaking up claims of 'quantum advantage.'
A gold film thinner than a hair, carved with hundreds of microscopic slits, acts as a statistical filter on quantum states of light — no cryogenic refrigeration required.
By growing a film just two atomic layers of tin telluride thick, researchers realized a long-sought 2D topological crystalline insulator — a milestone on the road to room-temperature quantum devices.
By cooling ultra-pure crystals to a fraction of a degree above absolute zero, a Vienna-led team stretched the lifetime of magnons to 18 microseconds — long enough to turn them into a 'quantum bus' linking hundreds of qubits.
A Los Alamos team built control protocols that can stretch, blur and even reverse the 'arrow of time' in quantum systems, then used the effect to design a 'quantum demon' that pulls energy out of measurement itself.
By cooling ultra-pure crystals to a whisker above absolute zero, a Vienna-led team kept magnons alive for 18 microseconds — long enough, they say, to carry quantum information the way today's best qubits do.
Los Alamos researchers designed control protocols that reshape the 'arrow of time' in quantum systems, then used the trick to pull energy back out of the very act of measurement.
University of Vienna researchers kept magnons alive for 18 microseconds — long enough to carry quantum information — by chilling ultrapure crystals to a whisker above absolute zero.
A Vienna-led team kept the tiny magnetic waves alive for 18 microseconds, showing their fragility was never a law of nature — just a matter of material purity.
A Los Alamos team designed control protocols that make quantum systems appear to run backward, reviving Maxwell’s demon in a modern quantum form.
Researchers led by the University of Vienna kept 'magnons' alive for 18 microseconds — long enough to carry quantum information — and found the only real limit is how pure the crystal is.
By mechanically rotating stacked sheets of hexagonal boron nitride, researchers tuned single-photon emitters across a record range — a step toward practical quantum computers and secure communications.
Oxford physicists demonstrate quantum superposition built from squeezed states rather than classical wave packets, opening possibilities for more resilient quantum computers.
RIKEN scientists develop technique for quantum systems to synchronize in only one direction while remaining stable against manufacturing flaws and environmental noise.
University of Hong Kong engineers turned a single silicon carbide transistor into an artificial neuron that fires reliably at just thousandths of a degree above absolute zero.
A Cal Poly team shows that periodically driving a material with shifting magnetic fields can create quantum phases that have no equivalent in any static material — and may bolster quantum computers.
RIKEN researchers develop technique combining quantum effects to create robust nonreciprocal synchronization for practical quantum technologies.
RIKEN researchers developed a breakthrough method that maintains quantum synchronization despite manufacturing flaws and environmental noise, potentially advancing practical quantum technologies.
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