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

arXiv · 2209.07903

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

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Abstract

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 $\mu$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

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BibTeX RIS

Jan Nyéki, Marijn Lucas, Petra Knappová, Lev V. Levitin, Andrew Casey, John Saunders, Harriet van der Vliet, Anthony J. Matthews. 2022-09-16. High performance cryogen-free microkelvin platform. https://arxiv.org/abs/2209.07903

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