Critical behaviour of coherence and correlation of counterpropagating twin beams

Abstract

This work analyses the temporal coherence and correlation of twin beams generated in a quasi-phase matched nonlinear crystal in a counterpropagating configuration, ranging from the low-gain regime, where counterpropagating photon pairs are generated spontaneously, to the regime of stimulated pair production, close to the MOPO (Mirrorless Optical Parametric Oscillator) threshold. Here we show a critical divergence of the correlation time and slowing down of quantum fluctuations originating from the feedback mechanism responsible of the MOPO threshold.

11 pages, 7 figures

References in corpus (2)

• Surface domain engineering in congruent lithium niobate single crystals: A route to submicron periodic poling
• Pure single photon generation by type-I PDC with backward-wave amplification

Cited by in corpus (6)

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• Generator of spatial evolution of the electromagnetic field
• Nonlinear Domain Engineering for Quantum Technologies
• Counter-propagating spontaneous four wave mixing: photon-pair factorability and ultra-narrowband single photon
• Squeezing and EPR correlation in the Mirrorless Optical Parametric Oscillator
• Temporal coherence and correlation of counterpropagating twin photons