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Physical Interpretation of Optimum Quantum Detection Operators

In: Quantum Communication, Computing, and Measurement

Author

Listed:
  • R. Momose

    (Tamagawa University, Research Center for Quantum Communications)

  • M. Sasaki

    (Ministry of Posts and Telecommunications, Communication Research Laboratory)

  • O. Hirota

    (Tamagawa University, Research Center for Quantum Communications)

Abstract

In this paper, it will be clarified why quantum detection theory may predict superior performance in comparison with semi-classical detection theory. The reason is based on the fact that in the quantum formulation the reduction of probabilities of the cross over regions among decision symbols is allowed by the quantum interference induced by quantum measurement processes. The superior performance for optimum and Kennedy’s receivers is explained by the compression of probability amplitude of signal state by the projectors. Furthermore we show the general realization theorem of the optimum projectors.

Suggested Citation

  • R. Momose & M. Sasaki & O. Hirota, 1997. "Physical Interpretation of Optimum Quantum Detection Operators," Springer Books, in: O. Hirota & A. S. Holevo & C. M. Caves (ed.), Quantum Communication, Computing, and Measurement, pages 289-297, Springer.
    • Handle: RePEc:spr:sprchp:978-1-4615-5923-8_31
    DOI: 10.1007/978-1-4615-5923-8_31
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