Berliner Physikalisches Kolloquium: Prof. Dr. Roman Schnabel "Quantum Correlated Light – Routinely used in Gravitational Wave Detectors"
Light with squeezed quantum uncertainty allows for the sensitivity improvement of laser interferometers.
In 2011, the GEO600 gravitational wave detector used squeezed light in its joint search for gravitational waves with Virgo. The successful sensitivity improvement triggered the implementation of squeezed light sources also in Advanced LIGO and Advanced Virgo.
On April 1st, 2019 these observatories started their third observational run. Since then, they have been detecting more than one GW event per week. An increased event rate of up to 50% is due to the exploitation of squeezed states of light.
Squeezed light is fully described by quantum theory, however, observations on squeezed light represent physics that is not self-evident. I present a description of why a squeezed photon counting statistic is rather remarkable.
Zeit & Ort
29.01.2026 | 18:30
Physikalisch-Technische Bundesanstalt
Anna-von-Helmholtz-Bau
Eingang: Ecke Marchstraße/Fraunhoferstraße
10587 Berlin
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Moderation: Prof. Dr. Jens Eisert
Über das Berliner Physikalische Kolloquium
Das Berliner Physikalische Kolloquium (BPK) im Magnus-Haus wurde 1998 von der Physikalischen Gesellschaft zu Berlin initiiert und wird in Gemeinschaft mit der Freien Universität Berlin, der Humboldt-Universität zu Berlin, der Technischen Universität Berlin, der Universität Potsdam und der BTU Cottbus-Senftenberg mit Unterstützung durch die Wilhelm und Else Heraeus-Stiftung durchgeführt.