Nature Communications (Apr 2021)

Noiseless photonic non-reciprocity via optically-induced magnetization

  • Xin-Xin Hu,
  • Zhu-Bo Wang,
  • Pengfei Zhang,
  • Guang-Jie Chen,
  • Yan-Lei Zhang,
  • Gang Li,
  • Xu-Bo Zou,
  • Tiancai Zhang,
  • Hong X. Tang,
  • Chun-Hua Dong,
  • Guang-Can Guo,
  • Chang-Ling Zou

DOI
https://doi.org/10.1038/s41467-021-22597-z
Journal volume & issue
Vol. 12, no. 1
pp. 1 – 8

Abstract

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Optical nonreciprocity through magneto-optical effects requires bulky apparatuses and strong magnetic fields, while magnetic-free approaches are difficult to implement. Here, the authors use optically-induced magnetisation in an atomic ensemble to get 50 dB of isolation over a large power dynamic range.