Parametric Symmetry Breaking in a Nonlinear Resonator
February 9th, 2018 ALEXANDER EICHLER Swiss Federal Institute of Technology, Zürich

Parametric phenomena have been around for a long time and are being used for signal amplification, squeezing, mode coupling, entanglement, and for many other applications. In spite of this wide use, nonlinear parametric resonators still offer many surprises. I will talk about new physics arising from the interaction of external and parametric driving in a nonlinear resonator. The main result is a breaking of the symmetry of the parametric phase states, and the emergence of a double hysteresis in frequency. The symmetry breaking effect can be used for a novel type of signal detector that is highly tolerant towards readout noise.

Seminar, February 9, 2018, 14:00. ICFO’s Nest Yellow Meeting Room

Hosted by Prof. Adrian Bachtold