Multi-spatial-mode effects in squeezed-light-enhanced interferometric gravitational wave detectors

Daniel Töyrä, Daniel D. Brown, McKenna Davis, Shicong Song, Alex Wormald, Jan Harms, Haixing Miao, Andreas Freise

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4 Citations (Scopus)
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Proposed near-future upgrades of the current advanced interferometric gravitational wave detectors include the usage of frequency dependent squeezed light to reduce the current sensitivity-limiting quantum noise. We quantify and describe the degradation effects that spatial mode-mismatches between optical resonators have on the squeezed field. These mode-mismatches can to first order be described by scattering of light into second-order Gaussian modes. As a demonstration of principle, we also show that squeezing the second-order Hermite-Gaussian modes $\mathrm{HG}_{02}$ and $\mathrm{HG}_{20}$, in addition to the fundamental mode, has the potential to increase the robustness to spatial mode-mismatches. This scheme, however, requires independently optimized squeeze angles for each squeezed spatial mode, which would be challenging to realise in practise.
Original languageEnglish
Article number022006
JournalPhysical Review D (Particles, Fields, Gravitation and Cosmology)
Issue number2
Publication statusPublished - 13 Jul 2017

Bibliographical note

10 pages, 12 figures


  • physics.optics
  • quant-ph


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