Unified space-time description of pulsed twin beams

• URL: http://arxiv.org/abs/2410.01907v1
• Date: Wed, 2 Oct 2024 18:05:21 GMT
• Title: Unified space-time description of pulsed twin beams
• Authors: Alessandra Gatti, Enrico Brambilla, Ottavia Jedrkiewicz,
• Abstract summary: The model is here derived from the 3D+1 propagation equation of the quantum fields in a nonlinear crystal. It allows a unified description of disparate experimental observations conducted over the last 20 years.
• Score: 44.99833362998488
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: This work provides a mathematical derivation of a quasi-stationary model for multimode parametric down-conversion, which was presented in [Gatti et al., Sci. Rep. 13, 16786] with heuristic arguments. The model is here derived from the 3D+1 propagation equation of the quantum fields in a nonlinear crystal, and its approximations discussed thoroughly. Thanks to its relative simplicity, and to the fact that it is valid in any gain regime, both at a quantum and classical level, it allows a unified description of disparate experimental observations conducted over the last 20 years, often described in the past by means of limited ad hoc models.

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