Showing papers on "Amplitude damping channel published in 1973"
TL;DR: In this paper, an ideal quantum mechanical model of interference is constructed, in particular, the role of the quantum mechanical phase difference of two harmonic modes on the interference picture is investigated, and the model is shown to be optimal.
1 citations
01 Jan 1973
TL;DR: A model of quantum noisy channel with input encoding by a classical random vector is described and the optimal decoding in this case realizes the maximum amount I = Spln � 1+S=(N+1) � of the classical information as trans.
Abstract: A model of quantum noisy channel with input encoding by a classical random vector is described. An equation of optimality is derived to determine a complete set of wave functions describing quantum decodings based on quasi-measurements maximizing the classical amount of transmitted information. A solution of this equation is found for the Gaussian multimode case with input Gaussian distribution. It is described by the overcomplete family of coherent vectors describing an optimal quasimeasurement of the canonical annihilation amplitudes in the output Hilbert space. It is found that the optimal decoding in this case realizes the maximum amount I = Spln � 1+S=(N+1) � of the classical information as trans