Bipartite and tripartite output entanglement in 3-mode optomechanical systems

Abstract

We provide analytic insight into the generation of stationary itinerant photon entanglement in a 3-mode optomechanical system. We identify the parameter regime of maximal entanglement, and show that strong entanglement is possible even for weak many-photon optomechanical couplings. We also show that strong tripartite entanglement is generated between the photonic and phononic output fields; unlike the bipartite photon-photon entanglement, this tripartite entanglement diverges as one approaches the boundary of system stability.

5 pages, 3 figures (main text); 8 pages, 4 figures (supplemental materials)

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• Significant enhancement in refrigeration and entanglement in auxiliary-cavity-assisted optomechanical systems