Nonreciprocal interactions induce frequency shifts in superradiant lasers

Nadolny, Tobias; Brunelli, Matteo; Bruder, Christoph

Nonreciprocal interactions induce frequency shifts in superradiant lasers

Jan 23, 2025

3 pages

e-Print:

2501.13808 [quant-ph]

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Abstract: (arXiv)

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.

Note:

5+3 pages, 3+1 figures

References(35)

Figures(4)

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