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Chinese Physics, 2005, Vol. 14(5): 1044-1050    DOI: 10.1088/1009-1963/14/5/034
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

Interaction of mesoscopic Josephson junction with the excited even and odd coherent states

Zhan You-Bang (詹佑邦)
Department of Physics, Huaiyin Teachers College, Huaian 223001, China
Abstract  The interaction of a mesoscopic Josephson junction (MJJ) with the excited even and odd coherent states is investigated. Some properties of the supercurrent in the MJJ in the presence of nonclassical light fields, such as collapse and revival phenomenon, the current--voltage step, dc component fluctuation and quantum coherence of supercurrent, are studied. It is shown that the expectation values and the fluctuation of supercurrent can exhibit dc components. It is also shown that the static supercurrent flows, dc components of the supercurrent fluctuation and correlation function of the dc supercurrent components, are related to the phase of the light field.
Keywords:  Mesoscopic Josephson junction      excited even and odd coherent states      collapse and revival      current-voltage step      second-order correlation function.  
Received:  15 March 2004      Revised:  11 January 2005      Accepted manuscript online: 
PACS:  7450  
  4250  

Cite this article: 

Zhan You-Bang (詹佑邦) Interaction of mesoscopic Josephson junction with the excited even and odd coherent states 2005 Chinese Physics 14 1044

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