Optimum quantum decision between a pure and a mixed state with application to detection of TCS signals
- 1 January 1979
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Information Theory
- Vol. 25 (1) , 69-76
- https://doi.org/10.1109/tit.1979.1055980
Abstract
A method is given for calculating the minimum average error probability attainable in deciding between a mixed state and a pure state of a quantum system. It is applied, first, to the detection of a noisy coherent pulse represented by a state with a Gaussian P-representation and, second, to the detection of a signal represented at the transmitter by a two-photon coherent state (TCS). In both problems the field of the receiver is free of background noise and, when no signal was transmitted, is in the ground state.Keywords
This publication has 4 references indexed in Scilit:
- Optical communication with two-photon coherent states--Part I: Quantum-state propagation and quantum-noiseIEEE Transactions on Information Theory, 1978
- Two-photon coherent states of the radiation fieldPhysical Review A, 1976
- Detection theory and quantum mechanics (II)Information and Control, 1968
- Information Theory of Quantum-Mechanical ChannelsPublished by Elsevier ,1965