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Updated: Sep 11, 2025
09:23
Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
Published on: May 30, 2014
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Transmitting squeezed states in a cascaded cavity-magnonic system
Optics Express
|August 13, 2025
Summary
This study demonstrates long-distance quantum state transmission using a cavity-magnonic system. Squeezed states were successfully transmitted to magnon modes, showing robustness and potential for quantum information applications.
Area of Science:
- Quantum physics
- Quantum information science
- Condensed matter physics
Background:
- Squeezed states are crucial for quantum information and metrology.
- Cavity-magnonic systems offer a platform for quantum state manipulation.
Purpose of the Study:
- To demonstrate long-distance transmission of a squeezed quantum state.
- To utilize a cavity-magnonic system for mediating quantum state transfer.
- To investigate the properties of transmitted squeezed states in magnon modes.
Main Methods:
- Employed a cavity-magnonic system with a cascaded cavity and yttrium iron garnet sphere.
- Utilized a flux-driven Josephson parametric amplifier as the squeezed state source.
- Mediated state transmission through six cavity modes to a magnon mode.
Main Results:
- Successfully transmitted a squeezed state over a long distance to a magnon mode.
- Demonstrated control over state transmission by blocking specific modes via detuning.
- Observed a phase difference of π between squeezing in adjacent cavity modes.
- Squeezed magnons showed high robustness against environmental temperature and magnetic damping.
Conclusions:
- The cavity-magnonic system enables robust, long-distance transmission of quantum states.
- This work provides a foundation for multi-mode quantum state transmission in continuous variable systems.
- The demonstrated control and robustness are significant for advancing quantum technologies.
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