title: Quantum routing of single photons with a cyclic three-level system.
abstract: We propose an experimentally accessible single-photon routing scheme using a △-type three-level atom embedded in quantum multichannels composed of coupled-resonator waveguides. Via the on-demand classical field being applied to the atom, the router can extract a single photon from the incident channel, and then redirect it into another. The efficient function of the perfect reflection of the single-photon signal in the incident channel is rooted in the coherent resonance and the existence of photonic bound states.
authors.affiliation: Department of Physics and Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Hunan Normal University, Changsha 410081, China.
authors.forename: Lan
authors.initials: L
authors.lastname: Zhou
authors.affiliation: State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, University of Chinese Academy of Science, Beijing 100190, China.
authors.forename: Li-Ping
authors.initials: LP
authors.lastname: Yang
authors.affiliation: Beijing Computational Science Research Center, Beijing 100084, China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Li
authors.affiliation: Beijing Computational Science Research Center, Beijing 100084, China.
authors.forename: C P
authors.initials: CP
authors.lastname: Sun