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Quantum squeezing of vector slow-light solitons in a coherent atomic system

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Listed:
  • Huang, Kai-Yu
  • Zhao, Yuan
  • Wu, Si-Qing
  • Xu, Si-Liu
  • Belić, Milivoj R.
  • Malomed, Boris A.

Abstract

We investigate the squeezing of two-component quantum optical solitons slowly moving in a tripod-type atomic system with double electromagnetically induced transparency (EIT). The evolution of the double probe-field envelopes is governed by a vector quantum nonlinear Schrödinger equation, derived from the coupled Heisenberg-Langevin and Maxwell equations. Quantum fluctuations of vector soliton pairs and atomic spin are analysed by means of a direct perturbation approach. Importantly, we find that the quantum squeezing of vector soliton pairs is generated by the giant Kerr nonlinearity, which is provided by EIT, and the outcome of the squeezing can be optimized by the selection of propagation distance and angle. The atomic spin squeezing is found for short propagation distances. The predicted results offer insights into soliton physics and may be useful for entanglement detection.

Suggested Citation

  • Huang, Kai-Yu & Zhao, Yuan & Wu, Si-Qing & Xu, Si-Liu & Belić, Milivoj R. & Malomed, Boris A., 2022. "Quantum squeezing of vector slow-light solitons in a coherent atomic system," Chaos, Solitons & Fractals, Elsevier, vol. 163(C).
    • Handle: RePEc:eee:chsofr:v:163:y:2022:i:c:s0960077922007494
    DOI: 10.1016/j.chaos.2022.112557
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    References listed on IDEAS

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    1. Lene Vestergaard Hau & S. E. Harris & Zachary Dutton & Cyrus H. Behroozi, 1999. "Light speed reduction to 17 metres per second in an ultracold atomic gas," Nature, Nature, vol. 397(6720), pages 594-598, February.
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