QUASIPROBABILITY DISTRIBUTIONS FOR OPEN QUANTUM-SYSTEMS WITHIN THE LINDBLAD THEORY

被引:27
作者
ISAR, A [1 ]
SCHEID, W [1 ]
SANDULESCU, A [1 ]
机构
[1] INST ATOM PHYS, BUCHAREST, ROMANIA
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
收藏
页码:2128 / 2134
页数:7
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