Quantum iSWAP gate in optical cavities with a cyclic three-level system

  • Guo-an Yan
  • Hao-xue Qiao
  • Hua Lu


In this paper we present a scheme to directly implement the iSWAP gate by passing a cyclic three-level system across a two-mode cavity quantum electrodynamics. In the scheme, a three-level \(\Delta \)-type atom ensemble prepared in its ground state mediates the interaction between the two-cavity modes. For this theoretical model, we also analyze its performance under practical noise, including spontaneous emission and the decay of the cavity modes. It is shown that our scheme may have a high fidelity under the practical noise.


iSWAP gate Cavity quantum electrodynamics Spontaneous emission 



This work is supported by National Natural Science Foundation of China under Grant Nos. 11674253, 11674089,11725524 and 61471356.


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Authors and Affiliations

  1. 1.School of Physics and TechnologyWuhan UniversityWuhanChina
  2. 2.State Key Laboratory of Magnetic Resonances and Atomic and Molecular Physics, Wuhan Institute of Physics and MathematicsChinese Academy of SciencesWuhanChina
  3. 3.School of ScienceHubei University of TechnologyWuhanChina
  4. 4.Key Laboratory of Quantum Information, Chinese Academy of SciencesUniversity of Science and Technology of ChinaHefeiChina

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