Titel
Enhanced continuous generation of non-Gaussianity through optomechanical modulation
Autor*in
Alessio Serafini
Department of Physics and Astronomy, University College London
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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.
Stichwort
optomechanicsnon-Gaussiannonlinearitymodulated optomechanics
Objekt-Typ
Sprache
Englisch [eng]
Persistent identifier
Erschienen in
Titel
New Journal of Physics
Band
21
Ausgabe
5
ISSN
1367-2630
Erscheinungsdatum
2019
Publication
IOP Publishing
Erscheinungsdatum
2019
Zugänglichkeit
Rechte
Rechteangabe
© 2019 The Author(s)
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