QUASIPROBABILITY DISTRIBUTIONS FOR OPEN QUANTUM-SYSTEMS WITHIN THE LINDBLAD THEORY

被引：25

作者：

ISAR, A ^{[1
]}

SCHEID, W ^{[1
]}

SANDULESCU, A ^{[1
]}

机构：

[1] INST ATOM PHYS, BUCHAREST, ROMANIA

来源：

JOURNAL OF MATHEMATICAL PHYSICS | 1991年 / 32卷 / 08期

关键词：

D O I：

10.1063/1.529185

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The Lindblad master equation for the damped quantum harmonic oscillator is transformed into Fokker-Planck equations for quasiprobability distributions. A comparative study is made for the Glauber P representation, the antinormal-ordering Q representation and the Wigner W representation. It will be proven that the variances for the damped harmonic oscillator found with these representations are the same. By solving the Fokker-Planck equations in the steady state, it will be shown that the quasiprobability distributions are two-dimensional Gaussians with widths determined by the diffusion coefficients.

引用

页码：2128 / 2134

页数：7

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