期刊
出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.2012982118
关键词
electromagnetically induced transparency; interference; polarization
资金
- NSF [DMR1743235, EFMA1641109]
- Army Research Office (ARO) [W911NF1710189, W911NF1910234]
- Packard Foundation [201339273]
- McDonnell International Scholars Academy
- U.S. Department of Defense (DOD) [W911NF1710189] Funding Source: U.S. Department of Defense (DOD)
The study reveals that a polarization mismatch between two indirectly coupled resonators can lead to polarization-induced transparency (PIT), which is distinct from EIT and exhibits a unidirectional feature, providing additional routes for manipulating light flow in optical resonator systems.
Polarization of optical fields is a crucial degree of freedom in the all-optical analogue of electromagnetically induced transparency (EIT). However, the physical origins of EIT and polarization-induced phenomena have not been well distinguished, which can lead to confusion in associated applications such as slow light and optical/quantum storage. Here we study the polarization effects in various optical EIT systems. We find that a polarization mismatch between whispering gallery modes in two indirectly coupled resonators can induce a narrow transparency window in the transmission spectrum resembling the EIT lineshape. However, such polarization-induced transparency (PIT) is distinct from EIT: It originates from strong polarization rotation effects and shows a unidirectional feature. The coexistence of PIT and EIT provides additional routes for the manipulation of light flow in optical resonator systems.
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