Phase-modulated quantum routing with a giant atom

Abstract

The coupling between giant atoms and waveguides is of great significance in quantum information science. We utilize a giant atom coupled with two waveguides to achieve a highly efficient, secure, and directional addressing quantum routing scheme. By adjusting the phases, single-photon transmission rates with high efficiencies can be obtained. Moreover, a potential implementing platform for our theoretical scheme is proposed based on the superconducting circuit. The feasibility of the proposed platform is confirmed by careful numerical selection and analysis. We hope that the research can potentially contribute to the development of future quantum networks.