Correlation and Information in Quantum Channels |
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| Authors: | Masashi Ban |
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| Institution: | (1) Advanced Research Laboratory, Hitachi, Akanuma, Hatoyama, Saitama, Japan;(2) CREST, Japan Science and Technology Agency, Yaesu, Chuo-ku, Tokyo, Japan |
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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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| Keywords: | entanglement classical correlation information quantum channel |
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