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Nonlinear power dependence of the spectral properties of an optical parametric oscillator below threshold in the quantum regime

MPS-Authors
/persons/resource/persons244333

Shafiee,  Golnoush
International Max Planck Research School, Max Planck Institute for the Science of Light, Max Planck Society;
Christoph Marquardt Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;

/persons/resource/persons244335

Otterpohl,  Alexander
Christoph Marquardt Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;
Institute of Optics, Information and Photonics, Friedrich-Alexander University Erlangen-Nürnberg;
Erlangen Graduate School in Advanced Optical Technologies (SAOT), Friedrich-Alexander University Erlangen-Nürnberg;

/persons/resource/persons201191

Sedlmeir,  Florian
Christoph Marquardt Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;
Institute of Optics, Information and Photonics, Friedrich-Alexander University Erlangen-Nürnberg;

/persons/resource/persons201187

Schunk,  Gerhard
Christoph Marquardt Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;
Institute of Optics, Information and Photonics, Friedrich-Alexander University Erlangen-Nürnberg;
Erlangen Graduate School in Advanced Optical Technologies (SAOT), Friedrich-Alexander University Erlangen-Nürnberg;

/persons/resource/persons201225

Vogl,  Ulrich
Christoph Marquardt Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;
Institute of Optics, Information and Photonics, Friedrich-Alexander University Erlangen-Nürnberg;

/persons/resource/persons201115

Leuchs,  Gerd
Leuchs Emeritus Group, Emeritus Groups, Max Planck Institute for the Science of Light, Max Planck Society;
Institute of Optics, Information and Photonics, Friedrich-Alexander University Erlangen-Nürnberg;

/persons/resource/persons201126

Marquardt,  Christoph
Christoph Marquardt Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;
Institute of Optics, Information and Photonics, Friedrich-Alexander University Erlangen-Nürnberg;

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Citation

Shafiee, G., Strekalov, D. V., Otterpohl, A., Sedlmeir, F., Schunk, G., Vogl, U., et al. (2020). Nonlinear power dependence of the spectral properties of an optical parametric oscillator below threshold in the quantum regime. New Journal of Physics, 22(7): 073045. doi:10.1088/1367-2630/ab9a87.


Cite as: https://hdl.handle.net/21.11116/0000-0005-8085-3
Abstract
Photon pairs and heralded single photons, obtained from cavity- assisted parametric down conversion (PDC), play an important role in quantum communications and technology. This motivated a thorough study of the spectral and temporal properties of parametric light, both above the Optical Parametric Oscillator (OPO) threshold, where the semiclassical approach is justified, and deeply below it, where the linear cavity approximation is applicable. The pursuit of a higher two- photon emission rate leads into an interesting intermediate regime where the OPO still operates considerably below the threshold but the nonlinear cavity phenomena cannot be neglected anymore. Here, we investigate this intermediate regime and show that the spectral and temporal properties of the photon pairs, as well as their emission rate, may significantly differ from the widely accepted linear model. The observed phenomena include frequency pulling and broadening in the temporal correlation for the down converted optical fields. These factors need to be taken into account when devising practical applications of the high-rate cavity-assisted SPDC sources.