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首页> 外文期刊>Physical Review, A. Atomic, molecular, and optical physics >Quantum logical gates with four-level superconducting quantum interference devices coupled to a superconducting resonator
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Quantum logical gates with four-level superconducting quantum interference devices coupled to a superconducting resonator

机译:具有耦合到超导谐振器的四级超导量子干扰器件的量子逻辑门

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摘要

We propose a way for realizing a two-qubit controlled phase gate with superconducting quantum interference devices (SQUIDs) coupled to a superconducting resonator. In this proposal, the two lowest levels of each SQUID serve as the logical states and two intermediate levels of each SQUID are used for the gate realization. We show that neither adjustment of SQUID level spacings during the gate operation nor uniformity in SQUID parameters is required by this proposal. In addition, this proposal does not require the adiabatic passage or a second-order detuning and thus the gate is much faster.
机译:我们提出了一种通过耦合到超导谐振器的超导量子干扰器件(SQUID)实现两比特控制相控门的方法。在该提议中,每个SQUID的两个最低级别用作逻辑状态,并且每个SQUID的两个中间级别用于门实现。我们表明,该建议既不需要在栅极操作期间调整SQUID水平间距,也不需要SQUID参数的均匀性。另外,该建议不需要绝热通道或二阶失谐,因此闸门快得多。

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