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.
Received: 22 November 2002
Revised: 19 February 2003
Accepted manuscript online:
PACS:
74.50.+r
(Tunneling phenomena; Josephson effects)
Cite this article:
Yao Yan-Sun (姚延荪), Zou Jian (邹健), Shao Bin (邵彬) Collapse and revival of a single-Cooper-pair box in a single-mode quantized field 2003 Chinese Physics 12 649
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
