Josephson Effect for Photons in Two Weakly Linked Microcavities
An-Chun Ji, Qing Sun, X. C. Xie, W. M. Liu
DOI 10.1103/PhysRevLett.102.023602 · Physical Review Letters
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Abstract
We describe an optical system that allows for direct observation of the photonic Josephson effects in two weakly linked microcavities containing ultracold two-level atoms. We show that, by moving the ultracold atoms within one cavity, we could simulate an analogous superconducting circuit and realize both the alternating- and direct-current (ac and dc) photonic Josephson effects. This provides a strategy for constructing novel interference devices of coherent photons and enables new investigations of the effect of many-body physics in strongly coupled atom-cavity systems.
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