Two mesoscopic Josephson junctions in the quantized light fields

Shao Bin, Zou Jian, Xing Xiu-San

Bin Shao, Jian Zou, Qian‐Shu Li

Bin Shao, Jian Zou, Rongyao Wang

Le‐Man Kuang, Yiwen Wang, Mo‐Lin Ge

Supercurrent fluctuation of a mesoscopic Josephson junction (MJJ) in the pre-sence of a dc static voltage and a time-varying quantized electromagnetic field (QEMF) is investigated. It is shown that the fluctuation of supercurrent in the MJJ exhibits periodical oscillations with a periodicity which depends upon the rate of the classical static external voltage and the frequency of the QEMF.

Shao Bin, Zou Jian

We consider the system of a mesoscopic Josephson junction interacting with a quantized radiation field and investigate the fluctuation properties of the junction variables with time evolution. Our results show that, due to the quantum entanglement between the field and junction, the mesoscopic Josephson junction subsystem can exhibit squeezing behavior.

Jian Zou, Bin Shao