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<p>In a study of amplifying atomic spin waves, we observe a nontrivial phenomenon: The spin wave stored in moving atoms has a capability of absorbing energy from an external light source, and exhibits a regeneration process. We demonstrate that this regeneration significantly enhances the lifetime and retrieval efficiency of the spin wave, while concurrently the noise is effectively suppressed. Our results suggest that the regeneration mechanism holds promise for mitigating the pronounced decoherence typically encountered in spin waves carried by room-temperature media, therefore offering potential applications in the realms of quantum information and precision measurements at ambient conditions.</p>

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Regeneration of spin wave in moving atoms

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年12月31日

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  • Jian-Peng Dou,
  • Feng Lu,
  • Xiao-Wen Shang,
  • Hao Tang,
  • Xian-Min Jin

摘要

In a study of amplifying atomic spin waves, we observe a nontrivial phenomenon: The spin wave stored in moving atoms has a capability of absorbing energy from an external light source, and exhibits a regeneration process. We demonstrate that this regeneration significantly enhances the lifetime and retrieval efficiency of the spin wave, while concurrently the noise is effectively suppressed. Our results suggest that the regeneration mechanism holds promise for mitigating the pronounced decoherence typically encountered in spin waves carried by room-temperature media, therefore offering potential applications in the realms of quantum information and precision measurements at ambient conditions.