论文标题
量子点温度计的非式校准和运行
Non-galvanic calibration and operation of a quantum dot thermometer
论文作者
论文摘要
仅使用单个非高谷栅极连接对低温量子点温度计进行校准和操作。用射频反射仪探测温度计，并通过将物理模型拟合到在小范围内温度下采取的反射射频信号的阶段来校准。然后，通过将校准的物理模型拟合到新相位数据来执行点的源和排水库的热度法。温度计可以在热拓宽和寿命扩大方案之间以及校准中使用的温度之外进行过渡。电子温度计在$ 3.0 \，\ Mathrm {k} $和$ 1.0 \，\ Mathrm {K} $的温度下进行，在$ 1 \，\ Mathrm {k} $ cryostat和稀释冰箱中。实验设置允许快速电子温度读数，灵敏度为$ 4.0 \ pm0.3 \，\ mathrm {mk}/\ sqrt {\ mathrm {hz}} $，在kelvin温度下。非凝胶校准过程提供了物理参数的读数，例如量子点杆臂。用于反射测定读数的解调器很容易获得，而且非常实惠。
A cryogenic quantum dot thermometer is calibrated and operated using only a single non-galvanic gate connection. The thermometer is probed with radio-frequency reflectometry and calibrated by fitting a physical model to the phase of the reflected radio-frequency signal taken at temperatures across a small range. Thermometry of the source and drain reservoirs of the dot is then performed by fitting the calibrated physical model to new phase data. The thermometer can operate at the transition between thermally broadened and lifetime broadened regimes, and outside the temperatures used in calibration. Electron thermometry was performed at temperatures between $3.0\,\mathrm{K}$ and $1.0\,\mathrm{K}$, in both a $1\,\mathrm{K}$ cryostat and a dilution refrigerator. The experimental setup allows fast electron temperature readout with a sensitivity of $4.0\pm0.3 \, \mathrm{mK}/\sqrt{\mathrm{Hz}}$, at Kelvin temperatures. The non-galvanic calibration process gives a readout of physical parameters, such as the quantum dot lever arm. The demodulator used for reflectometry readout is readily available and very affordable.
