We investigate the single-photon transport properties in an optical waveguide coupled with a Λ-type three-level atom (ΛTLA) based on symmetric and asymmetric couplings between the photon and ΛTLA. The transmission and reflection coefficients of the single photon in such a hybrid system are deduced using the real-space approach. Symmetric and asymmetric bifrequency photon attenuators are realized by tuning the atom–photon couplings. The phase shift and group velocity delay of the transmitted single photon are also analyzed.
© 2013 Optical Society of America
Original Manuscript: December 19, 2012
Revised Manuscript: February 24, 2013
Manuscript Accepted: March 12, 2013
Published: April 10, 2013
XiaoFei Zang, Tao Zhou, Bin Cai, and YiMing Zhu, "Single-photon transport properties in an optical waveguide coupled with a Λ-type three-level atom," J. Opt. Soc. Am. B 30, 1135-1140 (2013)