Observation of Cascaded Two-Photon-Induced Transitions between Fluxoid States of a SQUID
- 7 February 2000
- journal article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 84 (6), 1300-1303
- https://doi.org/10.1103/physrevlett.84.1300
Abstract
We present evidence for transitions between fluxoid wells of a SQUID due to cascaded, two-photon processes. Such transitions are evidenced by an anomalous dependence on the transition rate from the one-photon resonant level within the initial well, which cannot be explained by previously observed macroscopic resonant tunneling. These two-photon processes may be a significant source of decoherence in SQUID qubits subject to microwave radiation.Keywords
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