Scientists in Japan have developed a new way to instantly detect elusive quantum “W states,” a major milestone for quantum technology. The breakthrough could help unlock faster quantum communication, ...

Overview of compilation-based quantum process tomography (CQPT). The left panel shows the main idea: an unknown quantum process transforms an input state into an output state, and CQPT uses a ...

Quantum measurement interrogates a system to yield classical outcomes, yet disturbs the underlying state according to the postulates of quantum mechanics. Beyond the idealised projective measurement ...

A team of physicists in Japan has figured out how to identify a fragile, three-photon quantum state in a single measurement, ...

The concept of quantum entanglement is emblematic of the gap between classical and quantum physics. Referring to a situation in which it is impossible to describe the physics of each photon separately ...

Optical quantum computers are gaining attention as a next-generation computing technology with high speed and scalability. However, accurately characterizing complex optical processes, where multiple ...

The world of quantum physics is experiencing a second revolution, which will drive an exponential leap in the progress of computing, the internet, telecommunications, cybersecurity and biomedicine.

A team at the University of Oxford has coaxed a single trapped ion into a quantum state so exotic it has no classical counterpart, marking the first experimental demonstration of “quadsqueezing,” a ...