The basic unit of information in a quantum computer.
- Quantum computers require a different kind of error correction because a quantum bit, or ‘qubit,’ of data exists as a simultaneous combination of one and zero.’
- Quantum information investigates the result of basing information theory and practice on quantum physical notions of the world where, for example, a qubit, a quantum bit, can happily be both on and off.
- Some scientists are trying to design artificial ways of replicating quantum information; what I'd like to do is find a natural and simple mechanism for taking a quantum bit of information and copying it.
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