Scattering loss in precision metrology due to mirror roughness

Yehonathan Drori; Johannes Eichholz; Tega Edo; Hiro Yamamoto; Yutaro Enomoto; Gautam Venugopalan; Koji Arai; Rana X. Adhikari

doi:10.1364/JOSAA.455127

Scattering loss in precision metrology due to mirror roughness

Yehonathan Drori^*, Johannes Eichholz, Tega Edo, Hiro Yamamoto, Yutaro Enomoto, Gautam Venugopalan, Koji Arai, Rana X. Adhikari

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

Optical losses degrade the sensitivity of laser interferometric instruments. They reduce the number of signal photons and introduce technical noise associated with diffuse light. In quantum-enhanced metrology, they break the entanglement between correlated photons. Such decoherence is one of the primary obstacles in achieving high levels of quantum noise reduction in precision metrology. In this work, we compare direct measurements of cavity and mirror losses in the Caltech 40 m gravitational-wave detector prototype interferometer with numerical estimates obtained from semi-analytic intra-cavity wavefront simulations using mirror surface profile maps. We show a unified approach to estimating the total loss in optical cavities (such as the LIGO gravitational detectors) that will lead towards the engineering of systems with minimum decoherence for quantum-enhanced precision metrology.

Original language	English
Pages (from-to)	969-978
Number of pages	10
Journal	Journal of the Optical Society of America A: Optics and Image Science, and Vision
Volume	39
Issue number	5
DOIs	https://doi.org/10.1364/JOSAA.455127
Publication status	Published - 1 May 2022

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title = "Scattering loss in precision metrology due to mirror roughness",

abstract = "Optical losses degrade the sensitivity of laser interferometric instruments. They reduce the number of signal photons and introduce technical noise associated with diffuse light. In quantum-enhanced metrology, they break the entanglement between correlated photons. Such decoherence is one of the primary obstacles in achieving high levels of quantum noise reduction in precision metrology. In this work, we compare direct measurements of cavity and mirror losses in the Caltech 40 m gravitational-wave detector prototype interferometer with numerical estimates obtained from semi-analytic intra-cavity wavefront simulations using mirror surface profile maps. We show a unified approach to estimating the total loss in optical cavities (such as the LIGO gravitational detectors) that will lead towards the engineering of systems with minimum decoherence for quantum-enhanced precision metrology.",

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AU - Drori, Yehonathan

AU - Eichholz, Johannes

AU - Edo, Tega

AU - Yamamoto, Hiro

AU - Enomoto, Yutaro

AU - Venugopalan, Gautam

AU - Arai, Koji

AU - Adhikari, Rana X.

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AB - Optical losses degrade the sensitivity of laser interferometric instruments. They reduce the number of signal photons and introduce technical noise associated with diffuse light. In quantum-enhanced metrology, they break the entanglement between correlated photons. Such decoherence is one of the primary obstacles in achieving high levels of quantum noise reduction in precision metrology. In this work, we compare direct measurements of cavity and mirror losses in the Caltech 40 m gravitational-wave detector prototype interferometer with numerical estimates obtained from semi-analytic intra-cavity wavefront simulations using mirror surface profile maps. We show a unified approach to estimating the total loss in optical cavities (such as the LIGO gravitational detectors) that will lead towards the engineering of systems with minimum decoherence for quantum-enhanced precision metrology.

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Scattering loss in precision metrology due to mirror roughness

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