Manipulating Single-Photon Transport Properties in an Asymmetrical Waveguide Coupled to a Whispering-Gallery Resonator Containing a Two-Level Atom
ZHOU Tao1**, ZANG Xiao-Fei2, XU Dan-Hua1
1School of Mathematics and Physics, Shanghai University of Electric, Shanghai 200090 2Engineering Research Center of Optical Instrument and System (Ministry of Education), and Shanghai Key Lab of Modern Optical System, University of Shanghai for Science and Technology, Shanghai 200093
Abstract：A hybrid system containing an asymmetrical waveguide coupled to a whispering-gallery resonator embedded with a two-level atom is designed to investigate single-photon transport properties. The transmission and reflection amplitudes are obtained via the discrete coordinates approach. Numerical simulation demonstrates that a tri-frequency photon attenuator is realized by controlling the couplings between the asymmetrical waveguide and the whispering-gallery resonator. The phase shift, group delay and dissipation effects of the transmitted single-photon are also discussed.
2014, Vol. 31 
