Quantum correlation measurements in interferometric gravitational wave detectors

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Martynov, D. V. and Lockerbie, N.A., LSC Instrument Authors (2017) Quantum correlation measurements in interferometric gravitational wave detectors. Physical Review A, 95 (4). 043831. ISSN 1050-2947 (https://doi.org/10.1103/PhysRevA.95.043831)

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Abstract

Quantum fluctuations in the phase and amplitude quadratures of light set limitations on the sensitivity of modern optical instruments. The sensitivity of the interferometric gravitational-wave detectors, such as the Advanced Laser Interferometer Gravitational-Wave Observatory (LIGO), is limited by quantum shot noise, quantum radiation pressure noise, and a set of classical noises. We show how the quantum properties of light can be used to distinguish these noises using correlation techniques. Particularly, in the first part of the paper we show estimations of the coating thermal noise and gas phase noise, hidden below the quantum shot noise in the Advanced LIGO sensitivity curve. We also make projections on the observatory sensitivity during the next science runs. In the second part of the paper we discuss the correlation technique that reveals the quantum radiation pressure noise from the background of classical noises and shot noise. We apply this technique to the Advanced LIGO data, collected during the first science run, and experimentally estimate the quantum correlations and quantum radiation pressure noise in the interferometer.

ORCID iDs

Martynov, D. V. and Lockerbie, N.A. ORCID logoORCID: https://orcid.org/0000-0002-1678-3260;
  • Item type:Article
    ID code:60941
    Dates:
    Date
    Event
    21 April 2017
    Published
    14 February 2017
    Accepted
    Notes:Please consult manuscript for full attribution details.
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:14 Jun 2017 13:08
    Last modified:11 Nov 2024 11:43
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/60941
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