Relaxation oscillations and frequency entrainment in quantum mechanics

A. Chia, L. C. Kwek, C. Noh

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

Frequency entrainment of continuous-variable oscillators has to date been restrained to the weakly nonlinear regime. Here we overcome this bottleneck and extend frequency entrainment of quantum continuous-variable oscillators to arbitrary nonlinearities. The previously known steady state of such quantum oscillators in the weakly nonlinear regime (also known as a Stuart-Landau oscillator) is shown to emerge as a special case. Most importantly, the hallmark of strong nonlinearity - relaxation oscillations - is shown in quantum mechanics. Depending on the oscillator's nonlinearity, relaxation oscillations are found to occur via two distinct mechanisms in phase space.

Original languageEnglish
Article number042213
JournalPhysical Review E
Volume102
Issue number4
DOIs
StatePublished - Oct 2020

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