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
Published inPhysical Review Letters
DisciplineNanoscience CenterNanoscience Center
© 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.
PublisherAmerican Physical Society
ISSN Search the Publication Forum0031-9007
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