Noiseless Quantum Measurement and Squeezing of Microwave Fields Utilizing Mechanical Vibrations
Ockeloen-Korppi, C. F., Damskägg, E., Pirkkalainen, J-M., Heikkilä, T., Massel, F., & Sillanpää, M. (2017). Noiseless Quantum Measurement and Squeezing of Microwave Fields Utilizing Mechanical Vibrations. Physical Review Letters, 118(10), 103601. https://doi.org/10.1103/PhysRevLett.118.103601
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Physical Review LettersAuthors
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2017Copyright
© 2017 American Physical Society. Published in this repository with the kind permission of the publisher.
A process which strongly amplifies both quadrature amplitudes of an oscillatory signal necessarily adds
noise. Alternatively, if the information in one quadrature is lost in phase-sensitive amplification, it is
possible to completely reconstruct the other quadrature. Here we demonstrate such a nearly perfect phasesensitive
measurement using a cavity optomechanical scheme, characterized by an extremely small noise
less than 0.2 quanta. The device also strongly squeezes microwave radiation by 8 dB below vacuum.
A source of bright squeezed microwaves opens up applications in manipulations of quantum systems, and
noiseless amplification can be used even at modest cryogenic temperatures.
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