Bloch sphere representation of a qubit. A qubit can be represented as a point on the surface of a sphere, with the north and south poles corresponding to the classical states 0 and 1. (Image: ...

(a) An arbitrary single-qubit gate as a rotation in the Bloch picture. (b) List of a few common single-qubit gate operations.

Today’s quantum computers are fundamentally impractical. But with a more resilient qubit, scientists believe they can unlock the technology’s extraordinary potential. Soon, they hope to prove it.

The goal of building a quantum computer is to harness the quirks of quantum physics to solve certain problems far faster than a traditional computer can. And at the heart of a quantum computer is the ...

Evolution paths of the single control qubit on the Bloch sphere in the hybrid approach to Grover’s algorithm. Quantum computers are built of elementary operations called quantum gates that are ...

Posted: Jul 27, 2015 Superconducting qubit and magnetic sphere hybrid (Nanowerk News) Researchers at the University of Tokyo have demonstrated that it is possible to exchange a quantum bit, the ...