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

doi:10.1088/1674-1056/24/11/110304

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

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

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

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/Abstract

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

王冬梅, 钱懿, 许晶波, 俞攸红. Dynamical decoupling pulses on the quantum correlations for the system of superconducting quantum circuit[J]. 中国物理B, 2015, 24(11): 110304-110304.

Wang Dong-Mei (王冬梅), Qian Yi (钱懿), Xu Jing-Bo (许晶波), Yu You-Hong (俞攸红). Dynamical decoupling pulses on the quantum correlations for the system of superconducting quantum circuit[J]. Chin. Phys. B, 2015, 24(11): 110304-110304.

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

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

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