期刊
OPTICS EXPRESS
卷 18, 期 22, 页码 23016-23023出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.18.023016
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资金
- 973 Program [2006CB921603]
- National Natural Science Foundation of China [10704049, 10775091, 10934004, 60978001, 60978018, 11074154]
- ZJNSF [Y6090001]
A new type of collective nonlinear coupling is presented via the indirect interaction between an ultracold atomic ensemble and a nanomechanical oscillator. More intriguingly, its interaction strength is enhanced largely with a factor of the atomic number, and thus, reaches a strong coupling regime within current experimental parameters. For the large atomic number, this obtained nonlinear coupling describes the interaction between the phonon and a pair of quasiparticle. Physically, this pair of quasiparticle is excited from the ultracold atomic ensemble when a phonon is emitted and vice versa. Based on these collective excitations, the nonlinear optical processes with the chi((2)) term are simulated successfully. (C) 2010 Optical Society of America
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