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- W3105476306 endingPage "51" @default.
- W3105476306 startingPage "1" @default.
- W3105476306 abstract "According to quantum theory the interactions between physical systems are quantized. As a direct consequence, measurement sensitivities are fundamentally limited by quantization noise, or just `quantum noise' in short. Furthermore, Heisenberg's Uncertainty Principle demands measurement back-action for some observables of a system if they are measured repeatedly. In both respects, squeezed states are of high interest since they show a `squeezed' uncertainty, which can be used to improve the sensitivity of measurement devices beyond the usual quantum noise limits including those impacted by quantum back-action noise. Squeezed states of light can be produced with nonlinear optics, and a large variety of proof-of-principle experiments were performed in past decades. As an actual application, squeezed light has now been used for several years to improve the measurement sensitivity of GEO600 -- a laser interferometer built for the detection of gravitational waves. Given this success, squeezed light is likely to significantly contribute to the new field of gravitational-wave astronomy. This Review revisits the concept of squeezed states and two-mode squeezed states of light, with a focus on experimental observations. The distinct properties of squeezed states displayed in quadrature phase-space as well as in the photon number representation are described. The role of the light's quantum noise in laser interferometers is summarized and the actual application of squeezed states in these measurement devices is reviewed." @default.
- W3105476306 created "2020-11-23" @default.
- W3105476306 creator A5057767159 @default.
- W3105476306 date "2017-04-01" @default.
- W3105476306 modified "2023-10-18" @default.
- W3105476306 title "Squeezed states of light and their applications in laser interferometers" @default.
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