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Updated: Jan 6, 2026
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Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
Published on: August 5, 2013
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Strong Coupling between Microwave Photons and Nanomagnet Magnons
1Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
Physical Review Letters
|October 2, 2019
Summary
Researchers enhanced microwave photon-magnon hybrid systems using superconducting resonators and nanomagnets. This approach achieves high coupling strength for scalable quantum information processing, overcoming limitations of bulky ferromagnets.
Area of Science:
- Quantum physics
- Materials science
- Spintronics
Background:
- Coupled microwave photon-magnon hybrid systems leverage magnon physics for quantum applications.
- Current systems use bulky ferromagnets, limiting scalability in quantum information processing.
- High coupling strength is crucial for efficient hybrid system performance.
Purpose of the Study:
- To enhance single spin coupling strength in microwave photon-magnon hybrid systems.
- To develop a scalable and compatible design for quantum information processing.
- To enable precise engineering of coupling strength and control of dynamic properties in nanomagnet-based hybrid systems.
Main Methods:
- Utilizing lithographically defined superconducting resonators.
- Integrating nanometer-thick Permalloy wires with superconducting circuits.
- Investigating Kittel modes in magnetic nanowires and their interaction with resonator modes.
Main Results:
- Achieved high cooperativities between resonator modes and Kittel modes.
- Demonstrated enhanced single spin coupling strength.
- Developed an on-chip, scalable design compatible with superconducting quantum circuits.
Conclusions:
- The proposed design offers a direct route to hybrid quantum systems with nanomagnets.
- Precise engineering of coupling strength and control of dynamic properties are achievable.
- This work paves the way for scalable quantum information processing using advanced hybrid systems.
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