论文标题
用于低温冷却的电子子带退化热泵
Electron subband degeneracy heat pump for cryogenic cooling
论文作者
论文摘要
在本字母中提出了使用半导体异质结构的电子亚带退化的连续固态低温冷却的一种非常规的方法。对静电泵进行了建模，该静电泵采用子带“扩展”和“压缩”来达到亚稀释冷藏温度，并通过电子波相互作用设定的基本极限。使用超宽的GAAS量子量为示例，估计每单位量的冷却能力达到$ 4.5 \ \ rm mw/cm^3 $，热端温度为$ 300 \ \ rm mk $，适用于量子计算机或红外检测器等应用。
An unconventional method of continuous solid-state cryogenic cooling utilizing the electron subband degeneracy of semiconductor heterostructures is proposed in this Letter. An electrostatic heat pump is modeled, which employs subband "expansion" and "compression" to reach sub-dilution refrigeration temperatures with the fundamental limit set by electron-phonon interaction. Using an ultra-wide GaAs quantum well as an example, the cooling power per unit volume is estimated to reach $4.5\ \rm mW/cm^3$ with a hot-side temperature of $300\ \rm mK$, suitable for applications such as quantum computers or infrared detectors.
