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Negative Entropy and Information in Quantum Mechanics

Cerf, N. J. and Adami, C. (1997) Negative Entropy and Information in Quantum Mechanics. Physical Review Letters, 79 (26). pp. 5194-5197. ISSN 0031-9007. doi:10.1103/PhysRevLett.79.5194.

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A framework for a quantum mechanical information theory is introduced that is based entirely on density operators, and gives rise to a unified description of classical correlation and quantum entanglement. Unlike in classical (Shannon) information theory, quantum (von Neumann) conditional entropies can be negative when considering quantum entangled systems, a fact related to quantum nonseparability. The possibility that negative (virtual) information can be carried by entangled particles suggests a consistent interpretation of quantum informational processes.

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Adami, C.0000-0002-2915-9504
Additional Information:©1997 The American Physical Society Received 29 January 1997 We thank Steve Koonin, Asher Peres, Barry Simon, and Armin Uhlmann for enlightening discussions. This work has been funded by NSF Grants No. PHY 94-12818 and PHY 94-20470, and by DARPAyARO through the QUIC Program (No. DAAH04-96-1-3086). N.J.C. is Collaborateur Scientifique of the Belgian National Fund for Scientific Research.
Issue or Number:26
Record Number:CaltechAUTHORS:CERprl97
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:5512
Deposited By: Archive Administrator
Deposited On:20 Oct 2006
Last Modified:08 Nov 2021 20:26

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