期刊
PHYSICAL REVIEW A
卷 85, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.85.033821
关键词
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资金
- Australian Research Council Centre of Excellence
- NSF [PHY-0240532, PHY-0555522, CCF-0622100]
- NSF IGERT SELIM at the University of Virginia
- Direct For Mathematical & Physical Scien
- Division Of Physics [0855632] Funding Source: National Science Foundation
We analyze an optical parametric oscillator (OPO) in which cascaded down-conversion occurs inside a cavity resonant for all modes but the initial pump. Due to the resonant cascade design, the OPO presents two chi((2))-level oscillation thresholds that are therefore much lower than for a chi((3)) OPO. This is promising for reaching the regime of an effective third-order nonlinearity well above both thresholds. Such a chi((2)) cascaded device also has potential applications in frequency conversion to far-infrared regimes. But, most importantly, it can generate novel multipartite quantum correlations in the output radiation, which represent a step beyond squeezed or entangled light. The output can be highly non-Gaussian and therefore not describable by any semiclassical model. In this paper, we derive quantum stochastic equations in the positive-P representation and undertake an analysis of steady-state and dynamical properties of this system.
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