Reducing current noise in cryogenic experiments by vacuum-insulated cables
arXiv:1604.03903 · doi:10.1063/1.4963904
Abstract
We measure the current noise of several cryogenic cables in a pulse tube based dilution refrigerator at frequencies between about 1~mHz and 50~kHz. We show that vibration-induced noise can be efficiently suppressed by using vacuum-insulated cables between room temperature and the 2nd pulse tube stage. A noise peak below 4 fA at the 1.4~Hz operation frequency of the pulse tube, and a white noise density of 0.44 fA/\sqrt{Hz} in the millihertz range are obtained.
References in corpus (1)
Cited by in corpus (3)
- Vibration-induced electrical noise in a cryogen-free dilution refrigerator: characterization, mitigation, and impact on qubit coherence
- Development of a near-5-Kelvin, cryogen-free, pulse-tube refrigerator-based scanning probe microscope
- Helium surface fluctuations investigated with superconducting coplanar waveguide resonator