Quantum Physics

Puzzling Quantum Scenario Appears Not to Conserve Energy

Quanta Magazine: The quantum physicists Sandu Popescu, Yakir Aharonov and Daniel Rohrlich have been troubled by the same scenario for three decades. It started when they wrote about a surprising wave phenomenon called superoscillation in 1990. “We were never able to…

A New Option for Neutral-Atom Quantum Computing

Physics: Two independent teams show that neutral ytterbium-171 atoms can be trapped and used for quantum information processing, bringing quantum computers based on this platform a step closer to reality. According to Jeff Thompson, a physicist at Princeton University, now…

Quantum memristor paves the way for neuromorphic quantum computing

Physics World: Researchers in Italy and Austria have constructed a new device that can transmit coherent quantum information as a superposition of single photons. Known as a quantum memristor, the device could be used to fabricate quantum versions of so-called neuromorphic…

Lia Li: the physicist unlocking navigation technology

Physics World: When exploring an unfamiliar place, many of us default to a rather modern method of navigation: watching a blue dot move around a map, on a screen, and course-correcting to keep it on the right track. We owe this…