中国物理B ›› 2003, Vol. 12 ›› Issue (6): 649-654.doi: 10.1088/1009-1963/12/6/314

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Collapse and revival of a single-Cooper-pair box in a single-mode quantized field

姚延荪, 邹健, 邵彬   

  1. Department of Physics, Beijing Institute of Technology, Beijing 100081, China
  • 收稿日期:2002-11-22 修回日期:2003-02-19 出版日期:2005-03-16 发布日期:2005-03-16

Collapse and revival of a single-Cooper-pair box in a single-mode quantized field

Yao Yan-Sun (姚延荪), Zou Jian (邹健), Shao Bin (邵彬)   

  1. Department of Physics, Beijing Institute of Technology, Beijing 100081, China
  • Received:2002-11-22 Revised:2003-02-19 Online:2005-03-16 Published:2005-03-16

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摘要： We study the quantum dynamics of a single-Cooper-pair box biased by a classical voltage and also irradiated by a single-mode quantized field. We demonstrate that under weak damping of the quantized field, the collapse-revival phenomena can exist in this system, and the oscillations of the collapse and revival depend sensitively on the initial state of the single-mode quantized field and the damping rate κ. We also demonstrate that this system can show the beats phenomena.

Abstract: We study the quantum dynamics of a single-Cooper-pair box biased by a classical voltage and also irradiated by a single-mode quantized field. We demonstrate that under weak damping of the quantized field, the collapse-revival phenomena can exist in this system, and the oscillations of the collapse and revival depend sensitively on the initial state of the single-mode quantized field and the damping rate κ. We also demonstrate that this system can show the beats phenomena.

Key words: Josephson junction, quantized field, collapse and revival, damping rate

中图分类号:  (Tunneling phenomena; Josephson effects)

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