Two-port microwave calibration at millikelvin temperatures

Ranzani, Leonardo; Spietz, Lafe; Popovic, Zoya; Aumentado, José
March 2013
Review of Scientific Instruments;Mar2013, Vol. 84 Issue 3, p034704
Academic Journal
In this work we introduce a system for 2-port microwave calibration at millikelvin temperatures operating at the coldest stage of a dilution refrigerator by use of an adapted thru-reflect-line algorithm. We show that this can be an effective tool for characterizing common 50 Ω microwave components with better than 0.1 dB accuracy at temperatures that are relevant to many current experiments in superconducting quantum information.


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