Dynamical equations of quantum information and Gaussian channel

Bi Qiao, H.E. Ruda and D.Z. Zhou

Physica A: Statistical Mechanics and its Applications, 2006, vol. 363, issue 2, 198-210

Abstract: A subdynamic based kinetic equation (SKE) for quantum information density (QID) is presented and using this is shown that the Liouville equation, Master equation and Fokker–Planck equation for QID all share the same formalism as the density operator. This allows one to directly use QID for studying quantum communication and to construct a quantum Gaussian channel. The channel is described by a quantum Fokker–Planck equation, which permits harmonic oscillator encoded information to transmit quantum signals with quantum parallelism. The quantum dynamical mutual information for this channel is also calculated.

Keywords: Dynamical quantum information; Liouville equation; Subdynamics; Fokker–Planck equation (search for similar items in EconPapers)
Date: 2006
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:363:y:2006:i:2:p:198-210

DOI: 10.1016/j.physa.2005.08.044

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