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首页> 外文期刊>Physical Review, A >Measuring the Berry phase in a superconducting phase qubit by a shortcut to adiabaticity
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Measuring the Berry phase in a superconducting phase qubit by a shortcut to adiabaticity

机译:通过快捷方式测量超导相位Qubit中的浆果相位

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摘要

With a counter-diabatic field supplemented to the reference control field, the “shortcut to adiabaticiy” (STA) protocol is implemented in a superconducting phase qubit. The Berry phase measured in a short time scale is in good agreement with the theoretical result acquired from an adiabatic loop. The trajectory of a qubit vector is extracted, verifying the Berry phase alternatively by the integrated solid angle. The classical noise is introduced to the amplitude or phase of the total control field. The mean of the Berry phase measured under either noise is almost equal to that without noise, while the variance under the amplitude noise can be described by an analytical expression.
机译:利用补充到参考控制场的反亚非达型电场,在超导相位QUBET中实现了“粘合到绝对型”(STA)协议。 在短时间测量中测量的浆果阶段与从绝热环中获取的理论结果一致。 提取量子位向量的轨迹,通过集成的实心角来验证浆果相。 经典噪声被引入总控制场的幅度或相位。 在任一噪声下测量的浆膜的平均值几乎等于没有噪声,而可以通过分析表达描述幅度噪声下的方差。

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