At the Quantum Limit of Gravitational-Wave Detection

Quantum technologies are now rapidly expanding this observable horizon of gravitational-wave astrophysics. While the detectors already inject quantum states of light ("squeezed" vacuum) to reduce laser shot noise, this quantum enhancement comes at the cost of excess low-frequency noise due to quantum backaction. In this presentation, Victoria will highlight exciting discoveries from the LIGO detectors and show how quantum technologies are used in large-scale gravitational observatories.
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