Controlling Single-Photon Transport along an Optical Waveguide by using a Three-Level Atom

Abstract

We theoretically investigate the single-photon transport properties in an optical waveguide embedded with a V-type three-level atom (VTLA) based on symmetric and asymmetric couplings between the photon and the VTLA. Our numerical results show that the transmission spectrum of the incident photon can be well controlled by virtue of both symmetric and asymmetric coupling interactions. A multifrequency photon attenuator is realized by controlling the asymmetric coupling interactions. Furthermore, the influences of dissipation of the VTLA for the realistic physical system on single-photon transport properties are also analyzed.

Single-photon scattering controlled by an imperfect cavity*

“…Early studies mainly focus on the waveguide which is an one-dimensional continuum with linear dispersion [9,[11][12][13][14][15][16]. Shen and Fan proposed a real-space Hamiltonian with which they predicted many novel properties of single photon transport, such as the general Fano line shape and symmetric vacuum Rabi splitting for a leaky cavity [9].…”

“…Early studies mainly focus on the waveguide which is an one-dimensional continuum with linear dispersion. [9,[11][12][13][14][15][16] Shen and Fan proposed a real-space Hamiltonian with which they predicted many novel properties of single photon transport, such as the general Fano line shape and symmetric vacuum Rabi splitting for a leaky cavity. [9] Recently, an one-dimensional coupled-resonator waveguide (CRW) with cosine-type dispersion gets more and more attention, which can be realized in the experiment by using superconducting transmission line resonators.…”

Single-photon transport properties in an optical waveguide coupled with a Λ-type three-level atom

“…For example, Tsoi and Law investigated the single-photon scattering properties in a onedimensional waveguide embedded with a chain of N-polarized Λ-type three-level atoms (ΛTLAs) [30]. Although the symmetric bifrequency photon attenuators have been studied by controlling the asymmetric couplings between the single photon and a V-type three-level atom [31], the asymmetric bifrequency photon attenuators cannot be obtained in such a hybrid system. In this paper, we study the single-photon transport properties in an optical waveguide coupled with an ΛTLA with symmetric and asymmetric atom-photon couplings.…”