Radiation statistics of a degenerate parametric oscillator at threshold

Autor:	Hassler, Fabian, Kim, Steven, Arndt, Lisa
Rok vydání:	2022
Předmět:	Condensed Matter - Statistical Mechanics Condensed Matter - Mesoscale and Nanoscale Physics Quantum Physics
Zdroj:	SciPost Phys. 14, 156 (2023)
Druh dokumentu:	Working Paper
DOI:	10.21468/SciPostPhys.14.6.156
Popis:	As a function of the driving strength, a degenerate parametric oscillator exhibits an instability at which spontaneous oscillations occur. Close to threshold, both the nonlinearity as well as fluctuations are vital to the accurate description of the dynamics. We study the statistics of the radiation that is emitted by the degenerate parametric oscillator at threshold. For a weak nonlinearity, we can employ a quasiclassical description. We identify a universal Liouvillian that captures the relevant long-time dynamics for large photon-numbers. We find that the cumulants obey a universal power-law scaling as a function of the nonlinearity. The Fano factor shows a maximum close, but not coinciding, with the threshold. Moreover, we predict a certain ratio of the first three cumulants to be independent of the microscopic details of the system and connect the results to experimental platforms. Comment: 8 pages, 3 figures; Submission to SciPost
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2208.14886 Zobrazit plný text záznamu View this record from Arxiv