Quantum backaction evading measurements of a silicon nitride membrane resonator
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2022-08-01
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Language
en
Pages
15
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New Journal of Physics, Volume 24, issue 8, pp. 1-15
Abstract
Quantum backaction disturbs the measurement of the position of a mechanical oscillator by introducing additional fluctuations. In a quantum backaction measurement technique, the backaction can be evaded, although at the cost of losing part of the information. In this work, we carry out such a quantum backaction measurement using a large 0.5 mm diameter silicon nitride membrane oscillator with 707 kHz frequency, via a microwave cavity readout. The measurement shows that quantum backaction noise can be evaded in the quadrature measurement of the motion of a large object.Description
| openaire: EC/H2020/101019712/EU//GUANTUM | openaire: EC/H2020/824109/EU//EMP Funding Information: We acknowledge the facilities and technical support of Otaniemi research infrastructure for Micro and Nanotechnologies (OtaNano) that is part of the European Microkelvin Platform. This work was supported by the Academy of Finland (Contracts 307757, 312057), by the European Research Council (101019712), and by the Aalto Centre for Quantum Engineering. The work was performed as part of the Academy of Finland Centre of Excellence program (Project 336810). We acknowledge funding from the European Union’s Horizon 2020 research and innovation program under Grant Agreement 824109, the European Microkelvin Platform (EMP). Y Liu acknowledges the funding from the National Natural Science Foundation of China (Grant No. 12004044). L Mercier de Lépinay acknowledges funding from the Strategic Research Council at the Academy of Finland (Grant No. 338565). Publisher Copyright: © 2022 The Author(s). Published by IOP Publishing Ltd on behalf of the Institute of Physics and Deutsche Physikalische Gesellschaft.
Keywords
micromechanics, optomechanics, quantum measurement
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Citation
Liu, Y, Zhou, J, Mercier De Lépinay, L & Sillanpää, M A 2022, ' Quantum backaction evading measurements of a silicon nitride membrane resonator ', New Journal of Physics, vol. 24, no. 8, 083043, pp. 1-15 . https://doi.org/10.1088/1367-2630/ac88ef