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中国物理学会期刊

双模非经典光场辐照下介观约瑟夫森结中超流的动力学行为

CSTR: 32037.14.aps.46.2233

DYNAMIC BEHAVIOR OF SUPERCURRENT IN MESOSCOPIC JOSEPHSON JUNCTION INTERACTING WITH CORRELATED TWO MODE SU(1,1) COHERENT STATES OF QUANTUM ELECTROMAGNETIC FIELD

CSTR: 32037.14.aps.46.2233
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  • 研究了直流偏置电压下介观约瑟夫森结在SU(1,1)双模相干态光场作用下超流的动力学行为、流压台阶和直流分量等特性.研究发现超流能够呈现明显的崩塌与复苏现象,对于经典电磁场和非耦合的双模相干态光场作用下的情况,超流不出现此现象,且其流压台阶结构与后两种情况也不相同.

     

    The dynamic behaviors of supercurrent in mesoscopic Josephson junction in the presence of a dc bias voltage V0-and of correlated two-mode SU(1,1) coherent states of quantum electromagnetic field, as well as current-voltage steps and Shapiro dc current, are investigated.It is shown that the time evolution of supercurrent exhibits collapse and revival phenomenon, but for non-correlated two-mode coherent states it does not exhibit such a phenomenon. And the current-voltage steps of correlated two-mode SU(1,1) coherent states of quantum electromagnetic field are different from that of classical electromagnetic field and that of non correlated two-mode coherent states.

     

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