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arXiv quant-ph/0011012quant-ph
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关于吸收光子的朗之万量子化方法与辅助场量子化方法的等价性

On the equivalence of the Langevin and auxiliary field quantization methods for absorbing dielectrics

A. Tip, L. Knoll, S. Scheel, D. -G. Welsch

摘要:

最近发展了两种量子化电磁场的方法:一般色散和吸收线性色散。第一种方法是在麦克斯韦方程组中引入量子朗之万电流[T. Gruner和D.- G. Welsch,Phys.Rev.A53,1818(1996); Ho Trung Dung,L. Knöll和D.- G. Welsch,Phys.Rev.A57,3931(1998); S.谢尔湖Knöll和D.- G. Welsch,Phys.Rev.A58,700(1998)],而第二种方法使用一组辅助场,然后进行正则量子化过程[A. Tip,Phys.Rev.A57,4818(1998)]。我们证明了这两种方法是等价的。

英文摘要:

Recently two methods have been developed for the quantization of the electromagnetic field in general dispersing and absorbing linear dielectrics. The first is based upon the introduction of a quantum Langevin current in Maxwell's equations [T. Gruner and D.-G. Welsch, Phys. Rev. A 53, 1818 (1996); Ho Trung Dung, L. Knöll, and D.-G. Welsch, Phys. Rev. A 57, 3931 (1998); S. Scheel, L. Knöll, and D.-G. Welsch, Phys. Rev. A 58, 700 (1998)], whereas the second makes use of a set of auxiliary fields, followed by a canonical quantization procedure [A. Tip, Phys. Rev. A 57, 4818 (1998)]. We show that both approaches are equivalent.

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