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arXiv 2103.07030quant-ph
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用于可扩展量子计算架构的浮动可调谐耦合器

Floating tunable coupler for scalable quantum computing architectures

Eyob A. Sete, Angela Q. Chen, Riccardo Manenti, Shobhan Kulshreshtha, Stefano Poletto

摘要:

我们提出了一种浮动的可调谐耦合器,不依赖于直接的量子位-量子位耦合电容,以实现零耦合条件。我们表明,量子比特耦合器耦合的极性可以被设计为抵消否则恒定的量子比特-量子比特耦合,并在耦合器频率高于或低于量子比特频率时达到零耦合条件。我们实验证明这两个操作制度的可调谐耦合器通过实现对称和非对称配置的耦合器的超导垫相对于量子比特。这种浮动可调谐耦合器在设计大规模量子处理器时提供了灵活性,同时减少了始终在线的残余耦合。

英文摘要:

We propose a floating tunable coupler that does not rely on direct qubit-qubit coupling capacitances to achieve the zero-coupling condition. We show that the polarity of the qubit-coupler couplings can be engineered to offset the otherwise constant qubit-qubit coupling and attain the zero-coupling condition when the coupler frequency is above or below the qubit frequencies. We experimentally demonstrate these two operating regimes of the tunable coupler by implementing symmetric and asymmetric configurations of the coupler's superconducting pads with respect to the qubits. Such a floating tunable coupler provides flexibility in designing large-scale quantum processors while reducing the always-on residual couplings.

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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