Quantum Computing

6+ hour, 20+ min ago   (417+ words) Physicists have uncovered an in-plane Hall response that overturns a century-old assumption about how this famous electrical effect works. The discovery could eventually make multidirectional magnetic sensing possible with one tiny device....

2+ hour, 39+ min ago   (581+ words) A quantum bit that has lost its coherence is usually written off as a casualty of its noisy environment, but a new theoretical study argues that this verdict is often premature — and, more importantly, predictable....

4+ hour, 13+ min ago   (625+ words) Silicon has long dominated the solar industry, but its fundamental physics imposes hard limits on how much sunlight a single-junction cell can convert into electricity. Photons with less energy than silicon’s band gap simply pass through the material, while photons…...

8+ hour, 47+ min ago   (491+ words) After helping to kickstart quantum computing, NEC is backing out NEC has reportedly stopped building physical quantum computers after roughly three decades of research into superconducting circuits and solid-state qubit technology. The Japanese technology company is instead expected to concentrate…...

5+ hour, 30+ min ago   (795+ words) A team of cryptographers in China has unveiled the first publicly verifiable encryption scheme capable of withstanding the most aggressive class of attacks against encrypted cloud backups, a breakthrough that could reshape how organizations prove the integrity of duplicated data…...

14+ hour, 18+ min ago   (261+ words) Quantum computers have the potential to solve complex problems that no supercomputer today can handle. In the foreseeable future, quantum technology's computing power is expected to revolutionise fundamental ways of solving problems in medicine, energy, encryption, AI, and logistics. "The…...

3+ day, 16+ hour ago   (463+ words) Nighthawk r2 departs from conventional conditional reset techniques. In previous processor generations, quantum circuits relied on conditional resets using π-pulses and measurement cycles, requiring idle times of hundreds of microseconds between executions to prevent state leakage. Instead, it uses a dissipative…...

1+ day, 20+ hour ago   (271+ words) A single-period Floquet control method using "quantum lattice gates" to execute operations on bosonic quantum codes over a thousand times faster... Researchers at Chalmers University of Technology, in collaboration with Tianjin University, have developed a single-period Floquet control method using…...

14+ hour, 18+ min ago   (850+ words) To build a large-scale quantum computer that works, scientists and engineers need to overcome the spontaneous errors that quantum bits, or qubits, create as they operate. Scientists encode these building blocks of quantum information to suppress errors in other qubits…...

12+ hour, 45+ min ago   (1157+ words) Quantum computers face a race against time every time they perform a calculation. Their quantum states are so fragile that even tiny disturbances from electrical noise, heating, radiation or imperfect hardware can push a computation away from its intended result....