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GWADW2023 - Gravitational-Wave Advanced Detector Workshop

21–27 May 2023
Hotel Hermitage, La Biodola, Isola d'Elba
Europe/Rome timezone

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Session

Squeezing, Topology, Quantum Information: Ideas for beyond 3G Part 1

SqzQi1
23 May 2023, 16:00
Hotel Hermitage, La Biodola, Isola d'Elba

Hotel Hermitage, La Biodola, Isola d'Elba

Conveners

Squeezing, Topology, Quantum Information: Ideas for beyond 3G Part 1

  • Shtefan Danilishin (University of Glasgow)
  • Yanbei Chen

Presentation materials

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  1. 25. Straylight suppression with tunable coherence in high precision interferometers
    Mr Daniel Voigt (Universität Hamburg)
    23/05/2023, 16:00
    Beyond 3G
    Presentation

    As straylight is a dominating limitation for the sensitivity of gravitational wave detectors, we investigate new laser operation concepts and interferometer topologies for a more straylight-resilient detector configuration.
    Our main focus is the use of tunable coherence realized by phase modulation following a pseudo-random-sequence on the interferometer laser.
    While this breaks the...

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  2. 62. A phase-insensitive table-top quantum filter
    Artemii Dmitriev (University of Birmingham)
    23/05/2023, 16:18
    Beyond 3G
    Presentation

    We present the results of ongoing experimental work on a table-top prototype for a stable optomechanical phase-insensitive quantum filter. Recent studies have shown that such filters can increase the bandwidth-sensitivity product of both kilometre-scale GW detectors and table-top systems. Our prototype, the Birmingham quantum amplifier, is based on the optomechanical interaction between a...

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  3. 104. Digital Discovery of interferometric Gravitational Wave detectors
    Mario Krenn
    23/05/2023, 16:36
    Beyond 3G
    Presentation

    Conventional design processes for complex (quantum) optics experiments and devices, such as gravitational wave detectors, rely heavily on the expertise and intuition of human researchers. However, given the vast and often counterintuitive search space of potential experimental configurations, alternative approaches may prove beneficial. The advent of powerful computational algorithms and...

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  4. 53. Fundamental quantum limit achieved by internal squeezing in cavity-enhanced interferometric measurements
    Mikhail Korobko (University of Hamburg)
    23/05/2023, 16:54
    Beyond 3G
    Presentation

    Squeezed light has achieved remarkable success in enhancing the sensitivity of GW detectors, with up to 6dB improvements in GEO600 and frequency-dependent squeezing in other detectors. However, this demands extremely high quality for optical systems, as even minimal loss significantly reduces quantum enhancement. This is particularly relevant for next-generation detectors with other...

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  5. 68. Twin michelson interferometers with Einstein–Podolsky–Rosen squeezing
    Daniel Gould
    23/05/2023, 17:12
    Beyond 3G
    Presentation

    A theoretical two-carrier heterodyne detection scheme, which agrees with the sensitivity performance of homodyne readout for a gravitational wave detector, has been recently proposed. This scheme, with careful choice of readout/heterodyne frequency, is predicted to avoid low frequency noises which generally plague audio band squeezing experiments such as scattered light, control noise or...

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