Nonlinear parametric oscillator: A tool for probing quantum fluctuations.

Sarkar, Prasun; Bhattacharjee, Jayanta K · Phys Rev E · 2020

basic_science · Level V

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Abstract

Nanomechanical oscillators have, over the last few years, started probing regimes where quantum fluctuations are important. Here we consider a nonlinear parametric oscillator in the quantum domain. We show that in the classical subharmonic resonance zone, the quantum fluctuations are finite but greatly magnified depending on the strength of the nonlinear coupling. This should make such oscillators useful in probing quantum fluctuations.