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Efficient all-optical router and beam splitter for light with orbital angular momentum.
Optics Express
|July 17, 2020
Summary
We developed an efficient all-optical router using a double tripod atomic system. This system can store, retrieve, and manipulate high-dimensional light fields, enabling advanced optical information processing.
Area of Science:
- Quantum optics
- Atomic physics
- All-optical information processing
Background:
- All-optical routers and beam splitters are crucial for high-speed information processing.
- Controlling light-matter interactions in atomic systems is key to developing novel optical devices.
Purpose of the Study:
- To propose an efficient scheme for an all-optical router or beam splitter (BS).
- To demonstrate the storage, retrieval, and manipulation of high-dimensional probe fields.
- To enhance tunability and capacity for all-optical information processing.
Main Methods:
- Utilizing a double tripod-type atomic system.
- Coupling ground levels with two intensity-dependent weak microwave fields.
- Employing constructive or destructive interference between microwave fields and atomic spin coherence.
Main Results:
- Demonstrated efficient and high-fidelity storage, retrieval, and manipulation of high-dimensional probe fields.
- Achieved controllable enhancement or reduction of stationary light pulses and retrieved probe fields.
- Showcased a tunable all-optical router/BS capable of splitting probe fields.
Conclusions:
- The proposed scheme offers an efficient and tunable all-optical router/BS.
- The system integrates multiple functions for enhanced optical information processing.
- This work advances the development of high-capacity all-optical networks.
