Optical-force-mediated coupling between levitated nanospheres can go
ultrastrong
- URL: http://arxiv.org/abs/2203.10126v2
- Date: Tue, 29 Mar 2022 07:54:08 GMT
- Title: Optical-force-mediated coupling between levitated nanospheres can go
ultrastrong
- Authors: Daniele De Bernardis, Gianluca Rastelli, Iacopo Carusotto, Valerio
Scarani
- Abstract summary: We investigate the effect of optical-force-mediated interactions onto the quantum dynamics of a pair of nanospheres optically trapped in two neighboring optical tweezers.
Thanks to the interference between the tweezer beams and the elastically scattered light by the other nanosphere, the effective inter nanosphere coupling can reach the ultrastrong coupling regime.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: We theoretically investigate the effect of optical-force-mediated
interactions onto the quantum dynamics of a pair of dielectric nanospheres
optically trapped in two neighboring optical tweezers. Thanks to the
interference between the tweezer beams and the elastically scattered light by
the other nanosphere, the effective inter nanosphere coupling can reach the
ultrastrong coupling regime. Experimentally accessible signatures of the
entangled nature of the quantum ground state are highlighted, including
entanglement witnesses based on position/momentum correlation functions and a
sizable dynamical Casimir excitation upon a fast modulation of the tweezer's
properties.
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