Controllable coupling between flux qubit and nanomechanical resonator by magnetic field

Controllable coupling between flux qubit and nanomechanical resonator by magnetic field
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通过磁场实现通量量子位和纳米机械谐振器之间的可控耦合

DOI:
10.1088/1367-2630/9/2/035
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发表时间:
2006-07
影响因子:
3.3
通讯作者:
--
中科院分区:
物理与天体物理2区
文献类型:
--
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我们提出了一种主动机制,用于将纳米机械谐振器的量子化模式耦合到超导约瑟夫森结(或相位滑移)通量量子比特回路中的持续电流。这种耦合由外部耦合磁场独立控制。整个系统在强耦合极限下形成了一种新的固态腔量子电动力学(QED)结构。这种结构可以用来演示量子光学现象和相干操纵量子比特进行量子信息处理。耦合机制适用于更一般的情况下,超导约瑟夫森结系统是一个多能级系统。我们还解决有关实验实现的实际问题。
We propose an active mechanism for coupling the quantized mode of a nanomechanical resonator to the persistent current in the loop of a superconducting Josephson junction (or phase slip) flux qubit. This coupling is independently controlled by an external coupling magnetic field. The whole system forms a novel solid-state cavity quantum electrodynamics (QED) architecture in the strong coupling limit. This architecture can be used to demonstrate quantum optics phenomena and coherently manipulate the qubit for quantum information processing. The coupling mechanism is applicable for more generalized situations where the superconducting Josephson junction system is a multi-level system. We also address the practical issues concerning experimental realization.
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