Waiting time distributions in a two-level fluctuator coupled to a superconducting charge detector
arXiv:1909.02866 · doi:10.1103/PhysRevResearch.1.033163
Abstract
We analyze charge fluctuations in a parasitic state strongly coupled to a superconducting Josephson-junction-based charge detector. The charge dynamics of the state resembles that of electron transport in a quantum dot with two charge states, and hence we refer to it as a two-level fluctuator. By constructing the distribution of waiting times from the measured detector signal and comparing it with a waiting time theory, we extract the electron in- and out-tunneling rates for the two-level fluctuator, which are severely asymmetric.
arXiv comment7 pages, 4 figures
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