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A quantum computing feat brings the ‘megaquops’ era a step closer
Error correction creates qubits that glitch only 5 out of a million times, the first step toward a new phase for quantum computing.
Quantum magic state cleanup cuts errors 40-fold in first successful hardware test
Qubits, the quantum equivalent of digital bits, are fragile and prone to errors. That makes building reliable quantum computers extremely difficult. One fix has been to use traditional magic state distillation, ...
Quantum Meet Quantum: Hybrid Quantum Computer Lets Scientists Peak in on Foundational Quantum Effect
Oxford physicists used a hybrid quantum computer combining qubits and quantum oscillators to observe the Aharonov–Bohm effect.
Scientists stop quantum particle using magnetic field it never crossed
Quantum interference and trapped-ion qubits allowed Oxford physicists to halt particle tunneling using a magnetic field it never touched.
New quantum chip taps into weird quasiparticles to get qubits to communicate over long distances
Scientists have developed a new type of architecture for quantum computing chips, and it could pave the way for machines capable of large-scale processing.
This new qubit could be 100 times less error-prone in superfluid quantum computer breakthrough
A proposed qubit made with superfluid helium could cut quantum computing error rates by around 100 times by shielding quantum information from common forms of electromagnetic noise. If experiments confirm the predictions, the technology could eventually work alongside today’s superconducting qubits or serve as a new kind of quantum memory.
Japan switches on its first full-stack room-temperature quantum computer — and scientists plan to scale it up to 10,000 qubits
Japan's new quantum system, Shunkai, uses "optical tweezers" to trap and rearrange atoms, and will be available to researchers working on quantum error correction.
Physicists discover a hidden “curveball” in quantum light
Researchers have experimentally demonstrated the optical Magnus effect for the first time, revealing that a tightly focused laser interacts most strongly with an atom slightly away from the beam’s center. The unexpected shift is similar to the physics that makes a spinning table tennis ball curve through the air. Because lasers are used to control qubits, the effect could create errors in quantum computers, but it might also provide a new way to couple qubits together.
A “quantum bath” puts quantum entanglement on autopilot
Physicists have demonstrated a new way to entangle distant quantum bits without the constant measurements and active control normally required. The team created a “quantum bath,” a shared environment filled with correlated microwave photons that automatically pushes separated qubits into an entangled state and helps keep them there. The experiment confirms a theoretical prediction made more than 20 years ago and could offer a simpler way to connect modules in future quantum computers.
Engineers build world's first portable diamond-powered quantum computer — it works at room temperature and can be plugged into an outlet
The world's first portable, room-temperature quantum computer with more than 10 qubits utilizes flawed lab-made diamonds. The quantum system fits into a standard server rack and connects to a typical power grid.
An ordinary laptop solved a problem thought to require a quantum computer
A quantum problem once described as impossible for classical computers has now been solved using relatively modest hardware. Researchers used tensor networks to compress the overwhelming wave function created by hundreds of entangled qubits, allowing some calculations to run on a laptop. Their results matched both theoretical predictions and simulations performed with a quantum computer. The method could open new paths for exploring quantum dynamics and materials.
Scientists identify the origin of noise in spin qubit quantum processors
Charge noise arising from two-level fluctuators is considered to play a key role in causing qubit frequency shifts in silicon spin qubits, resulting in deteriorated gate fidelity. Higher temperatures can improve gate fidelity, but the microscopic origins of this effect and of qubit frequency shift have not yet been established. Now, using statistical simulations, researchers have clarified the parameter regimes under which gate fidelity can be improved and the potential origin of qubit frequency shifts.
Manufacturing qubits that can move
It's hard to mix electronic manufacturing and flexible geometry.
Scientists Finally See Quantum Computer Failures as They Happen
A new ultra-fast monitoring system reveals that quantum computer qubits can change from stable to unstable in mere milliseconds.
Quantum computer breakthrough tracks qubit fluctuations in real time
Qubits, the heart of quantum computers, can change performance in fractions of a second — but until now, scientists couldn’t see it happening. Researchers at NBI have built a real-time monitoring system that tracks these rapid fluctuations about 100 times faster than previous methods. Using fast FPGA-based control hardware, they can instantly identify when a qubit shifts from “good” to “bad.” The discovery opens a new path toward stabilizing and scaling future quantum processors.
Majorana qubits decoded in quantum computing breakthrough
Scientists have developed a new way to read the hidden states of Majorana qubits, which store information in paired quantum modes that resist noise. The results confirm their protected nature and show millisecond scale coherence, bringing robust quantum computers closer to reality.
Quantum Computing Breakthrough: Scientists Finally Unlock the Secret of Majorana Qubits
Scientists have finally figured out how to read ultra-secure Majorana qubits—bringing robust quantum computing a big step closer. “This is a crucial advance,” says Ramón Aguado, a CSIC researcher at the Madrid Institute of Materials Science (ICMM) and co author of the study. He explains that the
A tiny light trap could unlock million qubit quantum computers
A new light-based breakthrough could help quantum computers finally scale up. Stanford researchers created miniature optical cavities that efficiently collect light from individual atoms, allowing many qubits to be read at once. The team has already demonstrated working arrays with dozens and even hundreds of cavities. The approach could eventually support massive quantum networks with millions of qubits.
Scientists say quantum tech has reached its transistor moment
Quantum technology has reached a turning point, echoing the early days of modern computing. Researchers say functional quantum systems now exist, but scaling them into truly powerful machines will require major advances in engineering and manufacturing. By comparing different quantum platforms, the study reveals both impressive progress and steep challenges ahead. History suggests the payoff could be enormous—but not immediate.
Caltech pulls off a trick that scientists thought was impossible
Engineers manage to intertwine several qubits at once, taking the biggest leap yet toward a functional quantum internet.
Breakthrough 3D wiring architecture enables 10,000-qubit quantum processors
The novel 3D wiring architecture and chip fabrication method enable quantum processing units containing 10,000 qubits to fit in a smaller space than today's 100-qubit chips.