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Two-colour interferometry and switching through optomechanical dark mode excitation.
David P Lake1, Matthew Mitchell1, Barry C Sanders1
1Department of Physics and Astronomy and Institute for Quantum Science and Technology, University of Calgary, Calgary, AB, T2N 1N4, Canada.
Nature Communications
|May 7, 2020
Summary
We demonstrate a novel optomechanical system for efficient photon switching and routing essential for quantum internet development. This system enables interference of different wavelengths, paving the way for robust quantum information processing.
Area of Science:
- Quantum optics
- Optomechanics
- Nanophotonics
Background:
- Efficient wavelength switching is crucial for quantum internet realization.
- Multimode optomechanical systems offer solutions for handling diverse wavelengths.
- Single-mode systems are limited in studying widely separated wavelengths.
Purpose of the Study:
- To demonstrate interference between two optomechanically induced transparency processes.
- To observe the dynamics of an optomechanical dark mode.
- To enable all-optical, two-colour switching and interference.
Main Methods:
- Utilizing a diamond on-chip cavity.
- Observing interference via mutual coupling to a common mechanical resonance.
- Controlling the optomechanical dark mode.
Main Results:
- Direct observation of optomechanical dark mode dynamics.
- Demonstration of photon interference at different wavelengths.
- Achieved all-optical, two-colour switching and interference over 5 THz.
Conclusions:
- The demonstrated dark mode is insensitive to mechanical decoherence, ideal for quantum information processing.
- This system provides a pathway for building quantum networks.
- Optomechanical systems are key to advancing quantum technologies.
