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Enhanced nonlinear optomechanics in a coupled-mode photonic crystal device
Roel Burgwal1,2, Ewold Verhagen3,4
1Department of Applied Physics and Eindhoven Hendrik Casimir Institute, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands.
Nature Communications
|March 19, 2023
Summary
Researchers enhanced nonlinear optomechanical measurements using coupled photonic crystal modes. This breakthrough improves sensitivity for detecting mechanical motion and has applications in quantum technologies.
Area of Science:
- Quantum optics
- Nanophotonics
- Optomechanics
Background:
- Nonlinear optomechanical interactions are crucial for quantum applications but are typically weak.
- Enhancing these interactions is key to advancing quantum technologies and precise measurements.
Purpose of the Study:
- To demonstrate an enhancement scheme for nonlinear optomechanical measurement of mechanical motion.
- To achieve linear optomechanical measurement with reduced input power within the same device.
Main Methods:
- Utilizing coupled optical and mechanical modes in a photonic crystal device.
- Exploiting anisotropic mechanical elasticity for strong mechanical mode coupling.
- Employing thermo-optic tuning with an auxiliary laser and optimized device design.
Main Results:
- Successfully enhanced nonlinear optomechanical measurement sensitivity.
- Achieved linear optomechanical measurement with significantly reduced input power.
- Demonstrated the relationship between linear and nonlinear measurement enhancements.
Conclusions:
- The developed enhancement scheme offers broad applicability in quantum optomechanics.
- Potential applications include multimode phonon lasing and two-phonon heralding.
- This work paves the way for stronger nonlinear quantum optomechanical effects.
