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arXiv 1605.03420cond-mat.mes-hallcond-mat.supr-conquant-ph
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双腔约瑟夫森光子学中光子对的时间分辨统计

Time-resolved statistics of photon pairs in two-cavity Josephson photonics

Simon Dambach, Björn Kubala, Joachim Ankerhold

摘要:

我们分析了在一个电压偏置的约瑟夫森结与两个电磁振荡器串联的装置中高度非经典微波光子对的产生和发射。调谐外部电压,使得约瑟夫森频率等于两个模式频率之和,每个隧穿库珀对在两个振荡器中都产生一个额外的光子。通过二阶关联函数$g^{(2)}(τ)$和等待时间分布$w(τ)$的单振荡器和交叉振荡器变体,研究了两个振荡器的光子发射事件的时间分辨统计。它们提供了对两个振荡器子系统的强相关量子动力学的深入了解,并揭示了光的多种量子特征,包括强反聚束和维格纳函数中负值的存在。

英文摘要:

We analyze the creation and emission of pairs of highly nonclassical microwave photons in a setup where a voltage-biased Josephson junction is connected in series to two electromagnetic oscillators. Tuning the external voltage such that the Josephson frequency equals the sum of the two mode frequencies, each tunneling Cooper pair creates one additional photon in both of the two oscillators. The time-resolved statistics of photon emission events from the two oscillators is investigated by means of single- and cross-oscillator variants of the second-order correlation function $g^{(2)}(τ)$ and the waiting-time distribution $w(τ)$. They provide insight into the strongly correlated quantum dynamics of the two oscillator subsystems and reveal a rich variety of quantum features of light including strong antibunching and the presence of negative values in the Wigner function.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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