Observation of cascaded two-photon-induced transitions between fluxoid states of a SQUID |
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| Authors: | Han Rouse Lukens |
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| Institution: | Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045, USA. |
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| 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. |
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