Squeezing Enhances Quantum Synchronization

Physical Review Letters
Sameer SonarLeong-Chuan Kwek

Abstract

It is desirable to observe synchronization of quantum systems in the quantum regime, defined by the low number of excitations and a highly nonclassical steady state of the self-sustained oscillator. Several existing proposals of observing synchronization in the quantum regime suffer from the fact that the noise statistics overwhelm synchronization in this regime. Here, we resolve this issue by driving a self-sustained oscillator with a squeezing Hamiltonian instead of a harmonic drive and analyze this system in the classical and quantum regime. We demonstrate that strong entrainment is possible for small values of squeezing, and in this regime, the states are nonclassical. Furthermore, we show that the quality of synchronization measured by the FWHM of the power spectrum is enhanced with squeezing.

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Citations

Jun 17, 2018·Physical Review. E·Ehud AmitaiChristoph Bruder
Jul 18, 2020·Physical Review Letters·Arif Warsi LaskarSaikat Ghosh
Aug 25, 2018·Physical Review Letters·Alexandre Roulet, Christoph Bruder
Mar 15, 2020·Physical Review. E·Noufal JaseemSai Vinjanampathy
Jan 21, 2021·Physical Review. E·Biswabibek BandyopadhyayTanmoy Banerjee
Jul 10, 2021·Chaos·Biswabibek Bandyopadhyay, Tanmoy Banerjee

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