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Machine-Designed Sensor to Make Optimal Use of Entanglement-Generating Dynamics for Quantum Sensing.
Physical Review Letters ( IF 8.6 ) Pub Date : 2020-02-14 , DOI: 10.1103/physrevlett.124.060402
Simon A Haine 1 , Joseph J Hope 1
Affiliation  

We use machine optimization to develop a quantum sensing scheme that achieves significantly better sensitivity than traditional schemes with the same quantum resources. Utilizing one-axis twisting dynamics to generate quantum entanglement, we find that, rather than dividing the temporal resources into separate "state-preparation" and "interrogation" stages, a complicated machine-designed sequence of rotations allows for the generation of metrologically useful entanglement while the parameter is interrogated. This provides much higher sensitivities for a given total time compared to states generated via traditional one-axis twisting schemes. This approach could be applied to other methods of generating quantum-enhanced states, allowing for atomic clocks, magnetometers, and inertial sensors with increased sensitivities.

中文翻译:

机器设计的传感器,可以充分利用纠缠产生的动力学进行量子传感。

我们使用机器优化来开发一种量子感测方案,该方案比具有相同量子资源的传统方案具有更高的灵敏度。利用单轴扭曲动力学来产生量子纠缠,我们发现,不是将时间资源划分为单独的“状态准备”阶段和“询问”阶段,而是由机器设计的复杂的旋转序列允许生成在计量上有用的纠缠在查询该参数时。与通过传统的单轴扭曲方案生成的状态相比,这在给定的总时间内提供了更高的灵敏度。这种方法可以应用于生成量子增强态的其他方法,从而使原子钟,磁力计和惯性传感器具有更高的灵敏度。
更新日期:2020-02-14
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