Heisenberg-Langevin approach to driven superradiance

• URL: http://arxiv.org/abs/2304.06807v1
• Date: Thu, 13 Apr 2023 20:12:48 GMT
• Title: Heisenberg-Langevin approach to driven superradiance
• Authors: Ori Somech, Yoav Shimshi, and Ephraim Shahmoon
• Abstract summary: 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 light is in a classical-like coherent state. The presented Heisenberg-Langevin approach should be simple to generalize for treating superradiance beyond the permutation-symmetric Dicke model.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• 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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