Living Reviews in Relativity: “Quantum Measurement Theory in Gravitational-Wave Detectors”
Living Reviews in Relativity has published a new review article on “Quantum Measurement Theory in Gravitational-Wave Detectors” by Stefan L. Danilishin and Farid Ya. Khalili on April 26, 2012.
Please find the abstract and further details below.
Danilishin, Stefan and Khalili, Farid Ya.
“Quantum Measurement Theory in Gravitational-Wave Detectors”
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The fast progress in improving the sensitivity of the gravitational-wave (GW) detectors, we all have witnessed in the recent years, has propelled the scientific community to the point, when quantum behaviour of such immense measurement devices as kilometer-long interferometers starts to matter. The time, when their sensitivity will be mainly limited by the quantum noise of light is round the corner, and finding the ways how to make it lower will become a necessity. Therefore the primary goal we pursued in this review was to familiarize a broad spectrum of readers with the theory of quantum measurements in the very form it finds application in the area of gravitational-wave detection. We focus on how quantum noise arises in gravitational wave interferometers and what limitations it imposes on the achievable sensitivity. We start from the very basic concepts and gradually advance to the general linear quantum measurement theory and its application to the calculation of quantum noise in the contemporary and planned interferometric detectors of gravitational radiation of the first and second generation. Special attention is paid to the concept of Standard Quantum Limit and the methods of its surmounting.
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