Quantum interferometric measurements of temperature
Quantum interferometric measurements of temperature
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DOI：
10.1103/physreva.92.032112
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发表时间：
2015-09-10
影响因子：
2.9
通讯作者：
Zwierz, Marcin
中科院分区：
文献类型：
--
作者：
Jarzyna, Marcin;Zwierz, Marcin
我们提供了量子干涉温度计的详细描述，这是一个设备，估计样品的温度从测量的光学相位。我们严格分析这样一个设备的操作，通过研究在单模高斯状态下制备的光学探针系统与加热的样品建模为耗散热库的相互作用。我们发现，这种测温方法能够测量样品的温度在nanokelvin制度。此外，我们比较量子干涉温度计的基本精度与经典理想化高温计的理论精度，它从样品发射的总热辐射的测量中推断温度。我们发现，干涉式温度计提供了一个上级性能的温度传感，即使与这种理想化的高温计相比。我们预测，干涉温度计将被证明是有用的超精密温度传感和稳定的量子光学实验的基础上的非线性晶体和原子蒸气。
We provide a detailed description of the quantum interferometric thermometer, which is a device that estimates the temperature of a sample from the measurements of the optical phase. We rigorously analyze the operation of such a device by studying the interaction of the optical probe system prepared in a single-mode Gaussian state with a heated sample modeled as a dissipative thermal reservoir. We find that this approach to thermometry is capable of measuring the temperature of a sample in the nanokelvin regime. Furthermore, we compare the fundamental precision of quantum interferometric thermometers with the theoretical precision offered by the classical idealized pyrometers, which infer the temperature from a measurement of the total thermal radiation emitted by the sample. We find that the interferometric thermometer provides a superior performance in temperature sensing even when compared with this idealized pyrometer. We predict that interferometric thermometers will prove useful for ultraprecise temperature sensing and stabilization of quantum optical experiments based on the nonlinear crystals and atomic vapors.