Efficient Scheme for One-Way Quantum Computing with Radiofrequency SQUID Qubits by Adiabatic Passage

• 作者: 宋明玉
• 来源期刊: 理论物理通讯：英文版
• 学科: 工学
• 关键词: 超导量子干涉器件 绝热通道 量子计算 射频 量子位 单向 量子控制 绝热演化
• 年，卷（期）: 2011,（11）
• 页码范围: 837-844
• 页数: 8页
• 分类号: O413.2|TN201
• 语种: 英文

摘要

We proposed an efficient scheme for constructing a quantum controlled phase-shift gate and generating the cluster states with rf superconducting quantum interference devices （SQUIDs） coupled to a microwave cavity through adiabatic evolution of dark eigenstates. During the operation, the spontaneous emission is suppressed since the rf SQUIDs are always in the three lowest flux states. Considering the influence from the cavity decay with achievable experimental parameters, we numerically analyze the success probability and the fidelity for generating the two-SQUID maximally entangled state and the controlled phase-shift gate by adiabatic passage.