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

• 来源期刊: 中国物理B（英文版）
• 年，卷（期）: 2021,（3）
• 所属期刊栏目: SPECIAL TOPIC - Quantum computation and quantum simulation
• 页码范围: 68-75
• 页数: 8页
• 语种: 英文
• DOI: 10.1088/1674-1056/abd75b

摘要

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.