Injection locking and synchronization in Josephson photonics devices

نویسندگان

چکیده

Injection locking can stabilize a source of radiation, leading to an efficient suppression noise-induced spectral broadening and therefore, narrow spectrum. The technique is well established in laser physics, where phenomenological description due Adler usually sufficient. Recently, experiments were performed Josephson photonics devices, microwave radiation created by inelastic Cooper pair tunneling across dc-biased junction connected in-series with resonator. An in-depth theory for such accounting the nonlinearity specific engineered environments, lacking. Here, we study injection typical device environment consists single mode cavity, operated classical regime. We show that resistance, however small, important ingredient describing self-sustained oscillations enables region. derive dynamical equation locking, similar equation, from circuit equations. effect noise on locked phase described terms slips modified washboard potential. For weak noise, reduced exponentially signal. When this signal provided second device, two devices synchronize. In linearized limit, recover Kuramoto model synchronized oscillators. picture here suggests natural extension towards quantum

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ژورنال

عنوان ژورنال: Physical Review B

سال: 2021

ISSN: ['1098-0121', '1550-235X', '1538-4489']

DOI: https://doi.org/10.1103/physrevb.104.054517