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Title: | Enhanced continuous generation of non-Gaussianity through optomechanical modulation |
Authors: | Qvarfort, Sofia Serafini, Alessio Xuereb, Andre Rätzel, Dennis Edward Bruschi, David |
Keywords: | Optomechanics Nonlinear theories Gaussian processes Nonlinear optics |
Issue Date: | 2019 |
Publisher: | Institute of Physics Publishing Ltd. |
Citation: | Qvarfort, S., Serafini, A., Xuereb, A., Rätzel, D., & Bruschi, D. E. (2019). Enhanced continuous generation of non-Gaussianity through optomechanical modulation. New Journal of Physics, 21(5), 055004. |
Abstract: | We study the non-Gaussian character of quantum optomechanical systems evolving under the fully nonlinear optomechanical Hamiltonian. By using a measure of non-Gaussianity based on the relative entropy of an initially Gaussian state, we quantify the amount of non-Gaussianity induced by both a constant and time-dependent cubic light–matter coupling and study its general and asymptotic behaviour. We find analytical approximate expressions for the measure of non-Gaussianity and show that initial thermal phonon occupation of the mechanical element does not significantly impact the non-Gaussianity. More importantly, we also show that it is possible to continuously increase the amount of non-Gassuianity of the state by driving the light–matter coupling at the frequency of mechanical resonance, suggesting a viable mechanism for increasing the non-Gaussianity of optomechanical systems even in the presence of noise. |
URI: | https://www.um.edu.mt/library/oar/handle/123456789/95795 |
Appears in Collections: | Scholarly Works - FacSciPhy |
Files in This Item:
File | Description | Size | Format | |
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Enhanced_continuous_generation_of_non-Gaussianity_through_optomechanical_modulation(2019).pdf | 1.74 MB | Adobe PDF | View/Open |
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