Observation of cascaded two-photon-induced transitions between fluxoid states of a SQUID

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Issue Date
2000-02-07Author
Han, Siyuan
Lukens, J. E.
Rouse, R.
Publisher
AMERICAN PHYSICAL SOC
Type
Article
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Show full item recordAbstract
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 SQUlD qubits subject to microwave radiation.
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Citation
Han, SY; Rouse, R; Lukens, JE. Observation of cascaded two-photon-induced transitions between fluxoid states of a SQUID. PHYSICAL REVIEW LETTERS. FEB 7 200. 84(6): 1300-1303.
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