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- Title
- Resonant cascaded down-conversion
- Author(s)
- Weedbrook, Christian; Perrett, Ben; Kheruntsyan, Karen V.; Drummond, Peter D.; Pooser, Raphael C.; Pfister, Olivier
- Abstract
- 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 χ(2)-level oscillation thresholds that are therefore much lower than for a χ(3) OPO. This is promising for reaching the regime of an effective third-order nonlinearity well above both thresholds. Such a χ(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.
- Publication type
- Journal article
- Research centre
- Swinburne University of Technology. Faculty of Engineering and Industrial Sciences. Centre for Atom Optics and Ultrafast Spectroscopy. Centre of Excellence for Quantum-Atom Optics
- Source
- Physical Review A, Vol. 85, no. 3 (Mar 2012), article no. 033821
- Publication year
- 2012
- FOR Code(s)
- 01 Mathematical Sciences; 02 Physical Sciences; 03 Chemical Sciences
- Keyword(s)
- Continuous variables; Optical parametric oscillator; Quantum information; Steady states
- Publisher
- American Physical Society
- ISSN
- 1050-2947
- Publisher URL
- http://dx.doi.org/10.1103/PhysRevA.85.033821
- Copyright
- Copyright © 2012 American Physical Society. The published version is reproduced with the kind permission of the publisher.
- Additional information
- The authors acknowledge support from an Australian Research Council Centre of Excellence grant, NSF grants (no. PHY-0240532, no. PHY-0555522, and no. CCF-0622100) and the NSF IGERT SELIM program at the University of Virginia.
- Full text
- Peer reviewed
