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RESEARCH PRODUCT
Four-wave mixing and vacuum squeezing in polariton microcavities
Rafael GarcésGerma~¡n J. De Valcárcelsubject
Electromagnetic fieldPhysicsBistability02 engineering and technology021001 nanoscience & nanotechnology01 natural sciencesOptical bistabilityFour-wave mixingQuantum mechanics0103 physical sciencesOptical parametric oscillatorPolariton010306 general physics0210 nano-technologyBifurcationQuantum fluctuationdescription
In a recent paper [1] it has been shown how a bichromatic fast driving of optomechanical (optical domain) and superconducting circuit systems (microwave domain), operating in a limit where they present a non-linear Kerr-type interaction, can give rise to very strong vacuum squeezing. The driving with two close frequencies of a Kerr cavity changes the usual bistability bifurcation behaviour that takes place under monochromatic driving, into a degenerate four-wave mixing bifurcation, where a phase-bistable component starts oscillating spontaneously at a frequency that lies halfway between the two driving frequencies [2]. This resembles the physics of the optical parametric oscillator threshold, devices that has produced experimentally the strongest squeezing up to now. Associated to this bifurcation there is a strong reduction of the quantum fluctuations for a given quadrature of the electromagnetic field, resulting in vacuum squeezing, the reduction takes place at the central non-injected frequency.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-06-01 |