Heisenberg limit phase sensitivity in the presence of decoherence channels
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Publication:2805533
DOI10.1088/0253-6102/65/2/225zbMATH Open1335.81044arXiv1506.06249OpenAlexW2962985370MaRDI QIDQ2805533
Author name not available (Why is that?)
Publication date: 12 May 2016
Published in: (Search for Journal in Brave)
Abstract: In the present study, time evolution of quantum Cramer-Rao bound of entangled N00N state, as phase sensitivity, is determined by the aid of quantum estimation theory in the presence decoherence channels. Also, the dynamic quantum process as decoherence approach is characterized by quantum fisher information flow and entanglement amount in order to distinguish between Markovian and Non-Markovian process. The comparison between quantum fisher information and quantum fisher information flow assists to comprehend the phase sensitivity evolution corresponding to Non-Markovian and Markovian process. Furthermore, as result of backflow of information from the environment to system, the phase sensitivity corresponding memory effect of environment are revived after complete decay and increase in the few times.
Full work available at URL: https://arxiv.org/abs/1506.06249
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