Coherent control of single photons in the cross resonator arrays via the dark state mechanism

TL;DR

This paper demonstrates how dark state mechanisms in a hybrid resonator system enable controlled transfer of single photons, potentially serving as a quantum switch in cavity QED setups.

Contribution

It introduces a novel method for controlling single photon transfer using dark states in a coupled resonator and atom system, advancing quantum control techniques.

Findings

Photon transfer can be precisely controlled via dark states.

Fano-Feshbach effect enables bound state manipulation.

Potential implementation as a quantum switch.

Abstract

We study the single photon transfer in a hybrid system where the normal modes of two coupled resonator arrays interact with two transition arms of a ?-type atom localized in the intersectional resonator. It is found that, due to the Fano-Feshbach effect based on the dark state of the ?-type atom, the photon transfer in one array can be well controlled by the bound state of the photon in the other array. This conceptual setup could be implemented in some practical cavity QED system to realize a quantum switch for single photon.