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Fabrication and Characterization of High-Q Silicon Nitride Membrane Resonators
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Thermomechanical Two-Mode Squeezing in an Ultrahigh-Q Membrane Resonator.
Y S Patil1, S Chakram1, L Chang1
1Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, New York 14853, USA.
Physical Review Letters
|July 17, 2015
Summary
Researchers achieved quantum-compatible multimode mechanical interactions using parametric coupling. This enables nondegenerate parametric amplification and noise squeezing, advancing quantum technologies.
Area of Science:
- Quantum mechanics
- Mechanical resonators
- Nonlinear optics
Background:
- Achieving quantum-compatible interactions in mechanical systems is crucial for quantum technologies.
- Controlling multimode interactions in mechanical resonators presents significant challenges.
Purpose of the Study:
- To realize a quantum-compatible multimode interaction in a mechanical resonator.
- To demonstrate nondegenerate parametric amplification and thermomechanical noise squeezing.
- To explore applications in quantum metrology and transduction.
Main Methods:
- Utilizing reservoir-mediated parametric coupling in an ultrahigh Q mechanical resonator.
- Implementing nonlinear optical detection and cooling techniques compatible with quantum limits.
Main Results:
- Successfully demonstrated quantum-compatible multimode mechanical interaction.
- Achieved nondegenerate parametric amplification and thermomechanical noise squeezing.
- Found excellent agreement between experimental results and theoretical models over a large dynamic range.
Conclusions:
- The developed system provides strong multimode nonlinearities in a quantum-compatible mechanical platform.
- This platform is powerful for nonlinear quantum metrology.
- Enables efficient transduction between optical and phononic fields and quantum manipulation of phononic degrees of freedom.
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