Quantum Information in a Distributed Apparatus

Details Quantum Information in a Distributed Apparatus Quantum Information in a Distributed Apparatus

1998-04-20

arxiv.org/abs/quant-ph/9804047v1

Found.Phys. 28 (1998) 1005-1012

Physics

Quantum Physics

10 pages

Scientific paper

We investigate the information provided about a specified distributed apparatus of n units in the measurement of a quantum state. It is shown that, in contrast to such measurement of a classical state, which is bounded by log (n+1) bits, the information in a quantum measurement is bounded by 3.7 x n^(1/2) bits. This means that the use of quantum apparatus offers an exponential advantage over classical apparatus.

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