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

• Published in: Chinese physics B Vol. 24; no. 11; pp. 98 - 102
• Main Author: 王冬梅 钱懿 许晶波 俞攸红
• Format: Journal Article
• Language: English
• Published: 01.11.2015
• Subjects: Circuits; Correlation; Data buses; Decoupling; Dynamical systems; Dynamics; Qubits (quantum computing); Superconductivity; 动力学; 动态解耦; 数据总线; 电路系统; 相互作用; 脉冲; 超导量子; 量子比特
• ISSN: 1674-1056; 2058-3834; 1741-4199
• DOI: 10.1088/1674-1056/24/11/110304

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 zc-phase pulses. We then proceed to explore how the decoupling pulses affect the quantum transfer of information between the two superconducting qubits by makin~ use of the chance of trace distance.