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Noiseless Quantum Measurement and Squeezing of Microwave Fields Utilizing Mechanical Vibrations
C F Ockeloen-Korppi1, E Damskägg1, J-M Pirkkalainen1
1Department of Applied Physics, Aalto University, P.O. Box 15100, FI-00076 AALTO, Finland.
Physical Review Letters
|March 25, 2017
Summary
Researchers demonstrate a nearly perfect phase-sensitive measurement technique using cavity optomechanics. This method achieves extremely low noise amplification, enabling the reconstruction of quantum information and the generation of bright squeezed microwaves.
Area of Science:
- Quantum optics
- Optomechanics
- Quantum information science
Background:
- Phase-sensitive amplification typically adds noise, limiting its use in quantum measurements.
- Loss of information in one quadrature during amplification can be overcome by reconstruction techniques.
Purpose of the Study:
- To demonstrate a nearly perfect phase-sensitive measurement with minimal added noise.
- To generate bright squeezed microwave radiation using a cavity optomechanical system.
Main Methods:
- Utilizing a cavity optomechanical scheme for phase-sensitive amplification.
- Characterizing the noise added by the amplification process.
Main Results:
- Achieved phase-sensitive measurement with extremely low noise, less than 0.2 quanta.
- Demonstrated strong squeezing of microwave radiation by 8 dB below vacuum.
Conclusions:
- The developed technique enables near-noiseless amplification and reconstruction of quantum information.
- The generation of bright squeezed microwaves has potential applications in quantum system manipulation and quantum technologies.
