An “echo” that arrives before you finish speaking sounds like a glitch. In quantum hardware, that kind of self-interference ...

Quantum Markov semigroups provide a rigorous mathematical framework for describing the time‐continuous evolution of open quantum systems. These semigroups encapsulate the interplay between coherent ...

Scientists at the Institute of Physics at the Chinese Academy of Sciences have directly ...

Oracle-based quantum algorithms cannot use deep loops because quantum states exist only as mathematical amplitudes in Hilbert space with no physical substrate. Criticall ...

Quantum researchers have deployed a new algorithm to manage noise in qubits in real time. The method can be applied to a wide range of different qubits, even in large numbers. Noise is the "ghost in ...

A research team in China has built a quantum dot device that produces photon pairs with record-setting purity, achieving a two-photon fraction of 0.983(1). The work, published in Nature Materials, ...

Overview: Quantum computing has generated massive excitement for its potential to solve complex problems beyond the reach of classical computers.However, techni ...

What happens if you embed an ultrafast quantum computer inside a diamond (you know, aside from qualifying for sale in one of Tiffany’s catalogues and inviting “forever” computing quips)? Answer: You ...