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篇目详细内容 |
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【篇名】 |
Evolution law of Wigner function in laser process |
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【刊名】 |
Frontiers of Physics |
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【刊名缩写】 |
Front. Phys |
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【ISSN】 |
2095-0462 |
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【EISSN】 |
2095-0470 |
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【DOI】 |
10.1007/s11467-013-0334-8 |
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【出版社】 |
Higher Education Press and Springer-Verlag Berlin
Heidelberg |
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【出版年】 |
2013 |
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【卷期】 |
8
卷4期 |
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【页码】 |
381-385
页,共
5
页 |
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【作者】 |
Rui He;
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【关键词】 |
Kraus operator; Wigner operator; laser process |
【摘要】 |
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Based on the density operator’s o perator-sum representation r ecently obtained by Fan and Hu for a laser process (Opt. Commun., 2008, 281: 5571; Opt. Commun., 2009, 282: 932; Phys. Lett. B, 2008, 22: 2435), we derive the evolution law of Wigner operator, the law is concisely expressed in the normally ordered form: :, where g and κ are the cavity gain and the loss, respectively, and T≡ (κ？g )(κ+g？2ge？2(κ？g) t)？1. When : :, which is the initial Wigner operator. Using this formalism the evolution law of Wigner functions in laser process can be directly obtained. |
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