Mitigating Mode-Matching Loss in Nonclassical Laser Interferometry

Sebastian Steinlechner; Niels Ole Rohweder; Mikhail Korobko; Daniel Töyrä; Andreas Freise; Roman Schnabel

doi:10.1103/PhysRevLett.121.263602

Mitigating Mode-Matching Loss in Nonclassical Laser Interferometry

Sebastian Steinlechner, Niels Ole Rohweder, Mikhail Korobko, Daniel Töyrä, Andreas Freise, Roman Schnabel

Research output: Contribution to Journal › Article › Academic › peer-review

Abstract

Strongly squeezed states of light are a key technology in boosting the sensitivity of interferometric setups, such as in gravitational-wave detectors. However, the practical use of squeezed states is limited by optical loss, which reduces the observable squeeze factor. Here, we experimentally demonstrate that introducing squeezed states in additional, higher-order spatial modes can significantly improve the observed nonclassical sensitivity improvement when the loss is due to mode-matching deficiencies. Our results could be directly applied to gravitational-wave detectors, where this type of loss is a major contribution.

Original language	English
Article number	263602
Journal	Physical review letters
Volume	121
Issue number	26
DOIs	https://doi.org/10.1103/PhysRevLett.121.263602
Publication status	Published - 28 Dec 2018
Externally published	Yes

Funding

This research was supported by the ERC project MassQ (Grant No. 339897) and the Science and Technology Facilities Council Consolidated Grant (No. ST/N000633/1). D.\u2009T. was supported by the People Programme (Marie Curie Actions) of the European Union\u2019s Seventh Framework Programme FP7/2007-2013 (PEOPLE-2013-ITN) under REA Grant No. 606176. This article has LIGO document No. P1800230.

Funders	Funder number
Seventh Framework Programme	606176, 339897
Science and Technology Facilities Council	ST/N000633/1

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AU - Freise, Andreas

AU - Schnabel, Roman

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Mitigating Mode-Matching Loss in Nonclassical Laser Interferometry

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