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Quantum relative states

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Published in The European Physical Journal. D, Atomic, Molecular and Optical Physics. 2006, vol. 39, no. 2, p. 321-327
Collection Open Access - Licence nationale Springer
Abstract We study quantum state estimation problems where the reference system with respect to which the state is measured should itself be treated quantum mechanically. In this situation, the difference between the system and the reference tends to fade. We investigate how the overlap between two pure quantum states can be optimally estimated, in several scenarios, and we re-visit homodyne detection.
Keywords General physicsQuantum mechanicsQuantum information
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GISIN, Nicolas, IBLISDIR, Sofyan. Quantum relative states. In: The European Physical Journal. D, Atomic, Molecular and Optical Physics, 2006, vol. 39, n° 2, p. 321-327. https://archive-ouverte.unige.ch/unige:36687

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Deposited on : 2014-05-19

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