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Correlation and Information in Quantum Channels

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Abstract

Quantum and classical correlations in quantum channels are investigated by means of an entangled pure state and a separable state which is closest to an entangled pure state. The coherent information and the separable information are used to estimate how much correlation is transmitted through a quantum channel. As the examples, the linear dissipative channel of qubits and the quantum erasure channel are considered.

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Authors and Affiliations

  1. Advanced Research Laboratory, Hitachi, Akanuma, Hatoyama, Saitama, Japan

    Masashi Ban

  2. CREST, Japan Science and Technology Agency, Yaesu, Chuo-ku, Tokyo, Japan

    Masashi Ban

Authors
  1. Masashi Ban
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Correspondence to Masashi Ban.

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Ban, M. Correlation and Information in Quantum Channels. International Journal of Theoretical Physics 43, 323–339 (2004). https://doi.org/10.1023/B:IJTP.0000028866.99207.a5

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  • DOI: https://doi.org/10.1023/B:IJTP.0000028866.99207.a5

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