Quantum limit for laser interferometric gravitational-wave detectors from optical dissipation

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Colleges, School and Institutes


We derive a quantum limit to the sensitivity of laser interferometric gravitational-wave detectors from optical-loss-induced dissipation, analogous to the sensitivity limit from the mechanical dissipation. It applies universally to different interferometer configurations and cannot be surpassed unless the optical properties of the interferometer are improved. This result provides an answer to the long-standing question of how far we can push the detector sensitivity given the state-of-the-art optics.


Original languageEnglish
Article number011053
Number of pages10
JournalPhysical Review X
Issue number1
Publication statusPublished - 26 Mar 2019


  • Gravitation, Optics, Quantum Physics

ASJC Scopus subject areas