便携式纳米探针中的单分子量子测温
Quantum thermometry with single molecules in portable nanoprobes
摘要：
了解热传输与开发有效的微电子热管理策略以及基础科学目的有关。然而，在纳米结构环境和低温条件下测量温度仍然是一项具有挑战性的任务，需要高灵敏度和非侵入性方法。在这里，我们提出了一种便携式纳米温度计的基础上的分子二能级量子系统，在3 - 30 K的温度范围内，具有良好的温度和空间分辨率的顺序mK和$μ$ m，分别。我们通过估计图案化硅膜的热导率来验证这种分子温度计在纳米结构上的性能。此外，我们展示了二维温度映射的图案化表面通过同时光谱的所有温度计沉积在样品上。这些结果表明，这种分子温度计的潜力，探索在低温下的热性能和相关现象。
英文摘要：
Understanding heat transport is relevant to develop efficient strategies for thermal management in microelectronics for instance, as well as for fundamental science purposes. However, measuring temperatures in nanostructured environments and in cryogenic conditions remains a challenging task, that requires both high sentitivity and a non-invasive approach. Here we present a portable nanothermometer based on a molecular two-level quantum system that operates in the 3 - 30 K temperature range, with excellent temperature and spatial resolutions on the order of mK and $μ$m, respectively. We validate the performance of this molecular thermometer on nanostructures, by estimating the thermal conductivity of a patterned silicon membrane. In addition, we demonstrate the two-dimensional temperature mapping of a patterned surface via the simultaneous spectroscopy of all thermometers deposited on a sample. These results demonstrate the potential of this molecular thermometer to explore thermal properties and related phenomena at cryogenic temperatures.
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