期刊
OPTICS EXPRESS
卷 24, 期 3, 页码 2360-2369出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.24.002360
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资金
- National Natural Science Foundation of China (NSFC) [11404410, 11174372]
- Hunan Provincial Natural Science Foundation [14JJ3116]
- Project of Innovation-driven Plan in Central South University [2015CXS1035]
- Foundation of Talent Introduction of Central South University of Forestry and Technology [104-0260]
We investigate theoretically four-wave mixing (FWM) response and optical bistability (OB) in a hybrid nanosystem composed of a metal nanoparticle (MNP) and a semiconductor quantum dot (SQD) coupled to a nanomechanical resonator (NR). It is shown that the FWM signal is enhanced by more than three orders of magnitude as compared to that of the system without exciton-phonon interaction, and the FWM signal can also be suppressed significantly and broadened due to the exciton-plasmon interaction. As the MNP couples strongly with the SQD, the bistable FWM response can be achieved by adjusting the SQD-MNP distance and the pumping intensity. For a given pumping constant and a fixed SQD-MNP distance, the enhanced exciton-phonon interaction can promote the occurrence of bistability. Our findings not only present a feasible way to detect the spacing between two nanoparticles, but also hold promise for developing quantum switches and nanoscale rulers. (C)2016 Optical Society of America
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