中国物理B ›› 2021, Vol. 30 ›› Issue (3): 30307-.doi: 10.1088/1674-1056/abd75b

所属专题: SPECIAL TOPIC — Quantum computation and quantum simulation

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  • 收稿日期:2020-10-15 修回日期:2020-11-21 接受日期:2020-12-30 出版日期:2021-02-22 发布日期:2021-02-22

Fast generation of W state via superadiabatic-based shortcut in circuit quantum electrodynamics

Xue-Mei Wang(王雪梅), An-Qi Zhang(张安琪), Peng Xu(许鹏)†, and Sheng-Mei Zhao(赵生妹)‡   

  1. 1 Institute of Signal Processing and Transmission, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
  • Received:2020-10-15 Revised:2020-11-21 Accepted:2020-12-30 Online:2021-02-22 Published:2021-02-22
  • Contact: Corresponding author. E-mail: xupengqh201461@163.com Corresponding author. E-mail: zhaosm@njupt.edu
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 61871234) and sponsored by NUPTSF (Grant Nos. NY218097 and NY220178).

Abstract: We propose a scheme to fast prepare the three-qubit W state via superadiabatic-based shortcuts in a circuit quantum electrodynamics (circuit QED) system. We derive the effective Hamiltonian to suppress the unwanted transitions between different eigenstates by counterdiabatic driving, and obtain the W state with high-fidelity based on the superadiabatic passage. The numerical simulation results demonstrate that the proposed scheme can accelerate the evolution, and is more efficient than that with the adiabatic passage. In addition, the proposed scheme is robust to the decoherence caused by the resonator decay and qubit relaxation, and does not need additional parameters, which could be feasible in experiment.

Key words: W state, superadiabatic-based shortcut, circuit quantum electrodynamics

中图分类号:  (Quantum computation architectures and implementations)

  • 03.67.Lx
03.67.Bg (Entanglement production and manipulation) 42.50.Dv (Quantum state engineering and measurements)