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Updated: Dec 31, 2025
10:26
Fabrication and Characterization of Superconducting Resonators
Published on: May 21, 2016
11.8K
Ultrastrong Parametric Coupling between a Superconducting Cavity and a Mechanical Resonator
G A Peterson1,2, S Kotler1,2, F Lecocq1,2
1National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA.
Physical Review Letters
|January 11, 2020
Summary
We developed a novel optomechanical device demonstrating ultrastrong parametric coupling in superconducting cavities. This breakthrough enables enhanced frequency splitting and opens doors for ultrafast quantum applications.
Area of Science:
- Quantum physics
- Optomechanics
- Superconducting circuits
Background:
- Optomechanical systems couple mechanical motion to light.
- Superconducting circuits are vital for quantum technologies.
- Ultrastrong coupling regimes are sought for advanced quantum phenomena.
Purpose of the Study:
- To introduce a new optomechanical device architecture.
- To achieve and characterize ultrastrong parametric coupling.
- To explore potential applications in quantum information processing.
Main Methods:
- Fabrication of a micromechanical membrane coupled to a 3D superconducting cavity.
- Experimental realization of parametric coupling exceeding system dissipation and mechanical frequency.
- Measurement of hybridized normal mode frequency splitting.
Main Results:
- Achieved ultrastrong parametric coupling in the optomechanical device.
- Observed a frequency splitting of 88% of the bare mechanical frequency.
- Demonstrated coupling rates surpassing mechanical thermal decoherence.
Conclusions:
- The developed device enables ultrastrong coupling in an optomechanical system.
- The observed effects pave the way for ultrafast quantum state transfer.
- Potential for generating entanglement in superconducting circuits is highlighted.
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