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arXiv 1310.0102quant-ph
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电路QED中基于选择共振的量子纠缠操作

Selective-Resonance-Based Quantum Entangling Operation on Qubits in Circuit QED

Ming Hua, Fu-Guo Deng

摘要:

提出了一种在准色散区利用谐振腔辅助的超导量子比特的快速量子纠缠操作,该操作具有一种新的效应-由放大的量子比特态依赖的谐振腔跃迁频率产生的选择性谐振,以及所需量子拉比振荡和所不需量子拉比振荡之间的可调周期关系.这种操作不需要任何类型的驱动场和量子位之间的相互作用。更有趣的是,电荷量子比特的非计算第三激发态可以在缩短纠缠门的操作时间方面发挥重要作用。所有这些特性为在超导量子比特上实现比以前的方案快得多的量子纠缠门提供了一种有效的方法。

英文摘要:

We present a fast quantum entangling operation on superconducting qubits assisted by a resonator in the quasi-dispersive regime with a new effect --- the selective resonance coming from the amplified qubit-state-dependent resonator transition frequency and the tunable period relation between a wanted quantum Rabi oscillation and an unwanted one. This operation does not require any kind of drive fields and the interaction between qubits. More interesting, the non-computational third excitation states of the charge qubits can play an important role in shortening largely the operation time of the entangling gates. All those features provide an effective way to realize much faster quantum entangling gates on superconducting qubits than previous proposals.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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