论文标题
使用Athermal Resources的自主量子钟
Autonomous quantum clocks using athermal resources
论文作者
论文摘要
在这里，我们探讨了使用Athermal资源在量子系统中进行精确定时工作的可能性。我们表明，量子测量工程的储层可以用作驱动量子时钟的tick虫。两个和三级量子系统在我们的模型中充当换能器，将量子测量引起的噪声转换为产生一系列滴答。当测量的可观察到的最大不合情可及与时钟的哈密顿量时，时钟的滴答速率将最大化。我们使用较大的偏差原理来表征给定时间周期内观察到的壁虱的统计数据，并表明它可以是子poissonian-由曼德尔的Q参数量化 - 暗示了时钟的量子性质。我们讨论了时钟的准确性和效率，并将我们的框架扩展到包括测量和热资源的混合量子时钟。我们将与量子时钟相关的最新建议进行比较，并讨论收集量子测量工程非平衡条件的替代设备实现，超出了时钟的实现。
Here we explore the possibility of precise time-keeping in quantum systems using athermal resources. We show that quantum measurement engineered reservoirs can be used as athermal resources to drive the ticks of a quantum clock. Two and three level quantum systems act as transducers in our model, converting the quantum measurement induced noise to produce a series of ticks. The ticking rate of the clock is maximized when the measured observable maximally non-commutes with the clock's Hamiltonian. We use the large deviation principle to characterize the statistics of observed ticks within a given time-period and show that it can be sub-Poissonian -- quantified by Mandel's Q parameter -- alluding to the quantum nature of the clock. We discuss the accuracy and efficiency of the clock, and extend our framework to include hybrid quantum clocks fueled by both measurements, and thermal resources. We make comparisons to relatable recent proposals for quantum clocks, and discuss alternate device implementations harvesting the quantum measurement engineered non-equilibrium conditions, beyond the clock realization.
