Quantum engineering of squeezed states for quantum communication and metrology

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We report the experimental realization of squeezed quantum states of light, tailored for new applications in quantum communication and metrology. Squeezed states in a broad Fourier frequency band down to 1 Hz has been observed for the first time. Nonclassical properties of light in such a low frequency band is required for high efficiency quantum information storage in electromagnetically induced transparency (EIT) media. The states observed also cover the frequency band of ultra-high precision laser interferometers for gravitational wave detection and can be used to reach the regime of quantum non-demolition interferometry. And furthermore, they cover the frequencies of motions of heavily macroscopic objects and might therefore support the attempts to observe entanglement in our macroscopic world.
12 pages, 3 figures

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Quantum Physics

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http://salesiana.dossiersoluciones.com/handle/123456789/143308

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0707.2845
 http://arxiv.org/abs/0707.2845
 New Journal of Physics 9 (2007) 371
 doi:10.1088/1367-2630/9/10/371

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arXiv