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

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 numb...

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Veröffentlicht in:Physical review letters 2005-04, Vol.94 (16), p.160504.1-160504.4, Article 160504
1. Verfasser: HOFMANN, Holger F
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Classical and quantum physics: mechanics and fields
Exact sciences and technology
Physics
Quantum information
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container_title Physical review letters
container_volume 94
creator HOFMANN, Holger F
description 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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subjects Classical and quantum physics: mechanics and fields
Exact sciences and technology
Physics
Quantum information
title Complementary classical fidelities as an efficient criterion for the evaluation of experimentally realized quantum operations
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