Nonreciprocal interactions induce frequency shifts in superradiant lasers

Fuente: arXiv
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Hauptverfasser: Nadolny, Tobias, Brunelli, Matteo, Bruder, Christoph
Format: Preprint
Veröffentlicht: 2025
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author Nadolny, Tobias
Brunelli, Matteo
Bruder, Christoph
author_facet Nadolny, Tobias
Brunelli, Matteo
Bruder, Christoph
contents Superradiant lasers, which consist of incoherently driven atoms coupled to a lossy cavity, are a promising source of coherent light due to their stable frequency and superior narrow linewidth. We show that when a fraction of the atoms is not driven, a shift in the lasing frequency and a broadening of the linewidth occur, limiting the performance of a superradiant laser. We explain this behavior by identifying nonreciprocal interactions between driven and undriven atoms, i.e., competing alignment and antialignment of their dipoles. Our results have implications for the realization of superradiant lasers, establishing the relevance of nonreciprocal phenomena for quantum technologies.
format Preprint
id arxiv_https___arxiv_org_abs_2501_13808
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Nonreciprocal interactions induce frequency shifts in superradiant lasers
Nadolny, Tobias
Brunelli, Matteo
Bruder, Christoph
Quantum Physics
Pattern Formation and Solitons
Atomic Physics
Superradiant lasers, which consist of incoherently driven atoms coupled to a lossy cavity, are a promising source of coherent light due to their stable frequency and superior narrow linewidth. We show that when a fraction of the atoms is not driven, a shift in the lasing frequency and a broadening of the linewidth occur, limiting the performance of a superradiant laser. We explain this behavior by identifying nonreciprocal interactions between driven and undriven atoms, i.e., competing alignment and antialignment of their dipoles. Our results have implications for the realization of superradiant lasers, establishing the relevance of nonreciprocal phenomena for quantum technologies.
title Nonreciprocal interactions induce frequency shifts in superradiant lasers
topic Quantum Physics
Pattern Formation and Solitons
Atomic Physics
url https://arxiv.org/abs/2501.13808