中国物理B ›› 2015, Vol. 24 ›› Issue (11): 110304-110304.doi: 10.1088/1674-1056/24/11/110304

• GENERAL • 上一篇    下一篇

Dynamical decoupling pulses on the quantum correlations for the system of superconducting quantum circuit

王冬梅a b, 钱懿a, 许晶波a, 俞攸红b   

  1. a Zhejiang Institute of Modern Physics and Physics Department, Zhejiang University, Hangzhou 310027, China;
    b Applied Physics Department, Zhejiang University of Technology, Hangzhou 310032, China
  • 收稿日期:2015-04-12 修回日期:2015-07-17 出版日期:2015-11-05 发布日期:2015-11-05
  • 通讯作者: Xu Jing-Bo E-mail:xujb@zju.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 11274274).

Dynamical decoupling pulses on the quantum correlations for the system of superconducting quantum circuit

Wang Dong-Mei (王冬梅)a b, Qian Yi (钱懿)a, Xu Jing-Bo (许晶波)a, Yu You-Hong (俞攸红)b   

  1. a Zhejiang Institute of Modern Physics and Physics Department, Zhejiang University, Hangzhou 310027, China;
    b Applied Physics Department, Zhejiang University of Technology, Hangzhou 310032, China
  • Received:2015-04-12 Revised:2015-07-17 Online:2015-11-05 Published:2015-11-05
  • Contact: Xu Jing-Bo E-mail:xujb@zju.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 11274274).

摘要: We investigate the influence of the dynamical decoupling pulses on the quantum correlations in a superconducting system consisting of two noninteracting qubits interacting with their own data buses. It is found that the geometric discord and entanglement between the two superconducting qubits can be increased by applying a train of π-phase pulses. We then proceed to explore how the decoupling pulses affect the quantum transfer of information between the two superconducting qubits by making use of the change of trace distance.

关键词: quantum correlations, superconducting qubits, decoupling

Abstract: We investigate the influence of the dynamical decoupling pulses on the quantum correlations in a superconducting system consisting of two noninteracting qubits interacting with their own data buses. It is found that the geometric discord and entanglement between the two superconducting qubits can be increased by applying a train of π-phase pulses. We then proceed to explore how the decoupling pulses affect the quantum transfer of information between the two superconducting qubits by making use of the change of trace distance.

Key words: quantum correlations, superconducting qubits, decoupling

中图分类号:  (Quantum information)

  • 03.67.-a