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The DOI matches its Crossref record; 49 of the 49 references it cites were found in a registry or an index.

Anti-parity–time symmetry with flying atoms

Open access
Peng, Peng, Cao, Wanxia, Shen, Ce, Qu, Weizhi, Wen, Jianming, Jiang, Liang, Xiao, Yanhong·2016·Nature Physics

Abstract

The recently developed notion of parity–time (PT) symmetry in optical systems has spawned intriguing prospects. So far, most experimental implementations have been reported in solid-state systems. Here, we report the first experimental demonstration of optical anti-PT symmetry—the counterpart of conventional PT symmetry—in a warm atomic-vapour cell. Rapid coherence transport via flying atoms leads to a dissipative coupling between two long-lived atomic spin waves, allowing for the observation of the essential features of anti-PT symmetry with unprecedented precision on the phase-transition threshold, as well as refractionless light propagation. Moreover, we show that a linear or nonlinear interaction between the two spatially separated beams can be achieved. Our results advance non-Hermitian physics by bridging to the field of atomic, molecular and optical physics, where new phenomena and applications in quantum and nonlinear optics aided by (anti-)PT symmetry could be anticipated. Parity–time symmetry in optics is studied in a warm atomic vapour, where its counterpart, anti-parity–time symmetry, as well as refractionless propagation, can also be observed.

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Metadata

Authors
Peng, P., Cao, W., Shen, C., Qu, W., Wen, J., Jiang, L., & Xiao, Y.
Venue
Nature Physics
Published
2016-08-15
Volume
12
Issue
12
Pages
1139-1145
ISSN
  • 1745-2473 (ISSN-L)
  • 1745-2481
OpenAlex
W2121853028
Cited by
455
References
49
FWCI
13.49
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Anti-parity–time symmetry with flying atoms. https://app.cochat.ai/papers/10.1038/nphys3842
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Peng, P., Cao, W., Shen, C., Qu, W., Wen, J., Jiang, L., & Xiao, Y. (2016). Anti-parity–time symmetry with flying atoms. Nature Physics. https://doi.org/10.1038/nphys3842

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