3 November 2016 Quantum enhanced long baseline optical interferometers with noiseless linear amplification and displacement operation
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Abstract
Long baseline optical interferometry, by combining the lights from widely-distributed telescopes, is shown to afford pronounced improvement in the imaging resolution in comparison with a single telescope. However, the noise and photon loss in the transmission between the telescopes would limit the length of baseline of interferometer to a few hundred meters. Here, we present a scheme for enhancement of long baseline optical interferometer by using quantum resources- noiseless linear amplifier (NLA) and displacement operation at the photon transmission channels. We exhibit this enhancement quantitatively by calculating higher fisher information compared with those of conventional optical interferometer.
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Song Yang, Yun Su, Ningjuan Ruan, Zhiqiang Wu, Xuling Lin, "Quantum enhanced long baseline optical interferometers with noiseless linear amplification and displacement operation", Proc. SPIE 10029, Quantum and Nonlinear Optics IV, 100290A (3 November 2016); doi: 10.1117/12.2247729; https://doi.org/10.1117/12.2247729
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