Quantum computers seem to exists in a superposition of theoretical and practical states; there seems to be a lot of progress in the field, but a fully-realized quantum computer remains a hypothetical.

Researchers in the UK have taken a small but important step towards the creation of practical quantum computers by creating the first logic gates on a silicon chip that can process individual photons.

Spin doctors: Menno Veldhorst and Andrew Dzurak with their CNOT gate The first quantum-logic device made from silicon has been unveiled by researchers in Australia and Japan. Their controlled-not ...

A two-ion, robust, ultrarapid quantum logic gate capable of functioning in less than a microsecond has been designed, report the scientists involved. This theoretical research explores what could ...

Researchers have achieved a quantum logic gate with record-breaking 99.9% precision, reaching the benchmark required theoretically to build a quantum computer. Researchers at the University of ...

Deterministic entanglement of multiple qubits—an essential prerequisite for general quantum information processing—was first achieved nearly twenty years ago using laser manipulation of qubits ...

Together with qubits (the quantum version of the 0/1 bit), logic gates are the basic components to construct, as in a building block game, a quantum computer. They need to be fast not only to ...