论文标题
非质量高斯量子温度测定法中非经典性的操作意义
Operational significance of nonclassicality in nonequilibrium Gaussian quantum thermometry
论文作者
论文摘要
我们在具有高斯探针状态和高斯动力学的骨浴的非平衡温度估计中提供了非经典性的新操作意义。我们发现使用经典探针状态对温度计的结合。然后，我们表明，通过使用非经典探针状态，单模和两模式挤压真空状态，可以深刻地改善经典限制。有趣的是，我们观察到，也可以通过使用高斯测量值来实现这种改进。因此，我们提出了一种用于增强温度测定法的完全高斯协议，可以简单地实现并在量子光学平台中使用。
We provide new operational significance of nonclassicality in nonequilibrium temperature estimation of bosonic baths with Gaussian probe states and Gaussian dynamics. We find a bound on the thermometry performance using classical probe states. Then we show that by using nonclassical probe states, single-mode and two-mode squeezed vacuum states, one can profoundly improve the classical limit. Interestingly, we observe that this improvement can also be achieved by using Gaussian measurements. Hence, we propose a fully Gaussian protocol for enhanced thermometry, which can simply be realized and used in quantum optics platforms.
