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arXiv quant-ph/0505011quant-ph
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玻色自发发射的相空间分析

Phase-space analysis of bosonic spontaneous emission

M. K. Olsen, L. I. Plimak, S. Rebic, A. S. Bradley

摘要:

本文提出了用相空间方法模拟二能级玻色原子的自发发射。正P表示给出了充分和完整的描述,并可以进一步发展,在给定的实验情况下,给出确切的治疗的相互作用的简并玻色子与电磁场。维格纳表示,即使在二阶截断时,示出需要加倍的相空间,以允许在适当的福克-普朗克方程的正定扩散矩阵,仍然不同意与全量子结果的正P表示。我们表明,量子统计和相关性之间的基态和激发态影响的动态的发射过程中,使它在一般的非指数。

英文摘要:

We present phase-space techniques for the modelling of spontaneous emission in two-level bosonic atoms. The positive-P representation is shown to give a full and complete description and can be further developed to give exact treatments of the interaction of degenerate bosons with the electromagnetic field in a given experimental situation. The Wigner representation, even when truncated at second order, is shown to need a doubling of the phase-space to allow for a positive-definite diffusion matrix in the appropriate Fokker-Planck equation and still fails to agree with the full quantum results of the positive-P representation. We show that quantum statistics and correlations between the ground and excited states affect the dynamics of the emission process, so that it is in general non-exponential.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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