期刊
FRONTIERS IN PHYSICS
卷 10, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fphy.2022.880117
关键词
photon-atom interactions; quantum router; chiral waveguides; quantum coherence; purcell factor
资金
- National Natural Science Foundation of China [12147146, 12175057]
- Natural Science Foundation of Shandong Provincial [ZR2021QA046]
- Shaanxi Youth Outstanding Talent Support Plan and Shaanxi Natural Science Foundation [2019JQ-900]
This study proposes a quantum routing scheme for a chiral quantum system by coupling an emitter to two chiral waveguides. The scheme allows arbitrary transfer of quantum information between input and output ports with high efficiency.
The chiral interaction between single photons in waveguides and quantum emitters has gained considerable attention. Here, we proposed a tunable quantum routing scheme with a chiral quantum system by coupling an emitter to two chiral waveguides. Conventional quantum routers can only be achieved with each port output probability no larger than 25%. But our scheme can transfer quantum information arbitrarily from an input port to another, and each port's output probability is 100%. Besides, we investigated the influence of the Purcell factor in quantum routing properties. No matter how to change the size of the directionalities S-j or set a specific value to the dissipation of the emitter, we always found that the quantum routing has very high efficiency. Moreover, we also used a superconducting qubit coupled to two resonators to show the present scheme is pretty feasible for experimental implementation.
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