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arXiv · 1309.3208

Feedback-induced nonlinearity and superconducting on-chip quantum optics

Zhong-Peng Liu·Hui Wang·Jing Zhang·Yu-xi Liu·Re-Bing Wu·Franco Nori
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Abstract

Quantum coherent feedback has been proven to be an efficient way to tune the dynamics of quantum optical systems and, recently, those of solid-state quantum circuits. Here, inspired by the recent progress of quantum feedback experiments, especially those in mesoscopic circuits, we prove that superconducting circuit QED systems, shunted with a coherent feedback loop, can change the dynamics of a superconducting transmission line resonator, i.e., a linear quantum cavity, and lead to strong on-chip nonlinear optical phenomena. We find that bistability can occur under the semiclassical approximation, and photon anti-bunching can be shown in the quantum regime. Our study presents new perspectives for engineering nonlinear quantum dynamics on a chip.

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Zhong-Peng Liu, Hui Wang, Jing Zhang, Yu-xi Liu, Re-Bing Wu, Franco Nori. 2013-09-13. Feedback-induced nonlinearity and superconducting on-chip quantum optics. https://doi.org/10.1103/physreva.88.063851

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