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Regular version of the site

Article

Almost minimum error discrimination of N-ary weak coherent states by Jaynes-Cummings Hamiltonian dynamics

Scientific Reports. 2019. Vol. 9. No. 1. P. 19664-1-19664-19.
Min Namkung, Younghun K.

Quantum state discrimination of coherent states has been one of important problems in quantum
information processing. Recently, R. Han et al. showed that minimum error discrimination of two
coherent states can be nearly done by using Jaynes-Cummings Hamiltonian. In this paper, based on the
result of R. Han et al., we propose the methods where minimum error discrimination of more than two
weak coherent states can be nearly performed. Specially, we construct models which can do almost
minimum error discrimination of three and four coherent states. Our result can be applied to quantum
information processing of various coherent states.