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Squeezing enhances quantum synchronization
Citation
Sameer Sonar, Hajdušek, M., Mukherjee, M., Fazio, R., Vedral, V., Vinjanampathy, S., & Kwek, L. C. (2018). Squeezing enhances quantum synchronization. Physical Review Letters, 120, Article 163601. http://doi.org/10.1103/PhysRevLett.120.163601
Author
Sameer Sonar
•
Hajdušek, Michal
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Manas Mukherjee
•
Fazio, Rosario
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Vedral, Vlatko
•
Sai Vinjanampathy
•
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.
Date Issued
2018
Publisher
American Physical Society
Journal
Physical Review Letters