Noiseless Quantum Measurement and Squeezing of Microwave Fields Utilizing Mechanical Vibrations
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Physical Review Letters, Volume 118, issue 10, pp. 1-5
Abstract
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 phase-sensitive 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.Description
| openaire: EC/H2020/732894/EU//HOT
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Ockeloen-Korppi, C, 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, vol. 118, no. 10, 103601, pp. 1-5. https://doi.org/10.1103/PhysRevLett.118.103601