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Optomechanically-induced transparency in parity-time-symmetric microresonators
H Jing1, Şahin K Özdemir2, Z Geng3
11] The Key Laboratory of Quantum Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Science, Shanghai 201800,China [2] CEMS, RIKEN, Saitama, 351-0198, Japan [3] Department of Physics, Henan Normal University, Xinxiang 453007, China.
Scientific Reports
|July 15, 2015
Summary
Researchers explored optomechanically-induced transparency (OMIT) in PT-symmetric microresonators. They demonstrated control over light speed by tuning gain-loss ratios and pump power, enabling tunable slow and fast light effects.
Area of Science:
- Quantum optics
- Nanophotonics
- Condensed matter physics
Background:
- Optomechanically-induced transparency (OMIT) enables light storage in nanoscale devices.
- Parity-time (PT)-symmetric systems offer unique optical properties with tunable gain and loss.
Purpose of the Study:
- Investigate OMIT in PT-symmetric microresonators with a variable gain-to-loss ratio.
- Explore the transition between PT-symmetric and broken-PT-symmetric phases.
- Demonstrate control over light propagation (slow and fast light).
Main Methods:
- Theoretical study of OMIT in PT-symmetric microresonators.
- Analysis of system behavior across different gain-to-loss ratios.
- Investigation of pump power and gain-to-loss ratio effects on transmission.
Main Results:
- Observed sideband-reversed, non-amplifying transparency (inverted-OMIT).
- Identified a PT-phase transition altering pump and gain dependence.
- Showcased switching between slow and fast light by tuning pump power or gain-to-loss ratio.
Conclusions:
- PT-symmetric microresonators provide a novel platform for controlling light.
- Tunable gain-loss ratio and pump power offer precise control over light propagation.
- Nanofabricated phononic devices can be utilized for advanced optical control.
