Complementary classical fidelities as an efficient criterion for the evaluation of experimentally realized quantum operations

Details Complementary classical fidelities as an efficient criterion for the evaluation of experimentally realized quantum operations Complementary classical fidelities as an efficient criterion for the evaluation of experimentally realized quantum operations

2004-09-15

arxiv.org/abs/quant-ph/0409083v3

Phys. Rev. Lett. 94, 160504 (2005)

Physics

Quantum Physics

5 pages, no figures, comments on quantum communication added, final version for publication in Phys. Rev. Letters

Scientific paper

10.1103/PhysRevLett.94.160504

It is shown that a good estimate of the fidelity of an experimentally
realized quantum process can be obtained by measuring the outputs for only two
complementary sets of input states. The number of measurements required to test
a quantum network operation is therefore only twice as high as the number of
measurements required to test a corresponding classical system.

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