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

Autor: Töyrä, Daniel, Brown, Daniel D., Davis, McKenna, Song, Shicong, Wormald, Alex, Harms, Jan, Miao, Haixing, Freise, Andreas
Rok vydání: 2017
Předmět:
Zdroj: Phys. Rev. D 96, 022006 (2017)
Druh dokumentu: Working Paper
DOI: 10.1103/PhysRevD.96.022006
Popis: 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.
Comment: 10 pages, 12 figures
Databáze: arXiv