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Theory of the Josephson Junction Laser

Steven H. Simon, Nigel R. Cooper

DOI 10.1103/PhysRevLett.121.027004 · Physical Review Letters

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Abstract

We develop an analytic theory for the recently demonstrated Josephson junction laser [M. C. Cassidy et al., Science 355, 939 (2017)]. By working in the time-domain representation (rather than the frequency domain), a single nonlinear equation is obtained for the dynamics of the device, which is fully solvable in some regimes of operation. The nonlinear drive is seen to lead to mode-locked output, with a period set by the round-trip time of the resonant cavity.

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