Simulating Ramsey-Type Fringes in a Pulsed Microwave-Driven Classical Josephson Junction

Author: Marchese Jeffrey   Cirillo Matteo   Grøch-Jensen Niels  

Publisher: Springer Publishing Company

ISSN: 1230-1612

Source: Open Systems and Information Dynamics, Vol.14, Iss.2, 2007-06, pp. : 189-196

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Abstract

We present evidence for a close analogy between the nonlinear behaviour of a pulsed microwave-driven Josephson junction at low temperature and the experimentally observed behaviour of Josephson systems operated below the quantum transition temperature under similar conditions. We specifically address observations of Ramsey-type fringe oscillations, which can be understood in classical nonlinear dynamics as results of slow transient oscillations in a pulsed microwave environment. Simulations are conducted to mimic experimental measurements by recording the statistics of microwave-induced escape events from the anharmonic potential well of a zero-voltage state. Observations consistent with experimentally obtained Ramsey-type oscillations are found in the classical model.