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arXiv · 2304.06807

Heisenberg-Langevin approach to driven superradiance

Ori Somech·Yoav Shimshi·Ephraim Shahmoon
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Abstract

We present an analytical approach for the study of driven Dicke superradiance based on a Heisenberg-Langevin formulation. We calculate the steady-state fluctuations of both the atomic-spin and the light-field operators. While the atoms become entangled below a critical drive, exhibiting spin squeezing, we show that the radiated light is in a classical-like coherent state whose amplitude and spectrum are identical to those of the incident driving field. Therefore, the nonlinear atomic system scatters light as a linear classical scatterer. Our results are consistent with the recent theory of coherently radiating spin states. The presented Heisenberg-Langevin approach should be simple to generalize for treating superradiance beyond the permutation-symmetric Dicke model.

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Ori Somech, Yoav Shimshi, Ephraim Shahmoon. 2023-04-13. Heisenberg-Langevin approach to driven superradiance. https://arxiv.org/abs/2304.06807

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