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arXiv 2209.07903physics.ins-det
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高性能无制冷剂微开尔文平台

High performance cryogen-free microkelvin platform

Jan Nyéki, Marijn Lucas, Petra Knappová, Lev V. Levitin, Andrew Casey, John Saunders, Harriet van der Vliet, Anthony J. Matthews

摘要:

改进微开尔文温度范围的可及性对于量子材料的未来研究、量子信息科学以及量子传感器的应用都是重要的。在这里,我们报告的设计和性能的microkelvin平台的基础上的核退磁阶段,工程和良好的优化操作的标准无冷冻剂稀释冰箱。PrNi 5被用作主要制冷剂。该平台为在超低温、低电磁噪声环境中进行实验提供了大面积的安装空间。性能的特点是使用电流传感噪声测温。已经达到了低至395 $μ$ K的温度,并且已经建立了一种协议,其中可以在95%的时间内操作低于1 mK的实验,为广泛的科学应用提供了有效的无冷冻剂的微开尔文环境

英文摘要:

Improved accessibility to the microkelvin temperature regime is important for future research in quantum materials; for quantum information science; and for applications of quantum sensors. Here we report the design and performance of a microkelvin platform based on a nuclear demagnetization stage, engineered and well optimized for operation on a standard cryogen-free dilution refrigerator. PrNi5 is used as the dominant refrigerant. The platform provides a large area for mounting experiments in an ultralow temperature, low electromagnetic noise environment. The performance is characterized using current sensing noise thermometry. Temperatures as low as 395 $μ$K have been reached, and a protocol has been established in which it is possible to operate experiments below 1 mK for 95% of the time, providing an efficient cryogen-free microkelvin environment for a wide range of science applications

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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