期刊
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
卷 51, 期 7, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1361-6455/aaaf9f
关键词
non-Hermitian optics; atomic coherence; refractive index
资金
- National Key R&D Program of China [2017YFA0303703]
- National Natural Science Foundation of China [61605154, 11474228]
- Natural Science Foundation of Shaanxi Province [2017JQ6039, 2017JZ019]
- China Postdoctoral Science Foundation [2016M600776, 2016M600777, 2017T100734]
- Postdoctoral Science Foundation of Shaanxi Province [2017BSHYDZZ54, 2017BSHTDZZ18]
A wide class of non-Hermitian Hamiltonians can possess entirely real eigenvalues when they have parity-time (PT) symmetric potentials. Recently, this family of non-Hermitian systems has attracted considerable attention in diverse areas of physics due to their extraordinary properties, especially in optical systems based on solid-state materials, such as coupled gain-loss waveguides and microcavities. Considering the desired refractive index can be effectively manipulated through atomic coherence, it is important to realize such non-Hermitian optical potentials and further investigate their distinct properties in atomic systems. In this paper, we review the recent theoretical and experimental progress of non-Hermitian optics with coherently prepared multi-level atomic configurations. The realizations of (anti-) PT symmetry with different schemes have extensively demonstrated the special optical properties of non-Hermitian optical systems with atomic coherence.
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