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Title: Device-independent state estimation based on Bell's inequalities
Authors: Bardyn, C.-E.
Liew, T.C.H. 
Massar, S.
McKague, M.
Scarani, V. 
Issue Date: 14-Dec-2009
Source: Bardyn, C.-E., Liew, T.C.H., Massar, S., McKague, M., Scarani, V. (2009-12-14). Device-independent state estimation based on Bell's inequalities. Physical Review A - Atomic, Molecular, and Optical Physics 80 (6) : -. ScholarBank@NUS Repository.
Abstract: The only information available about an alleged source of entangled quantum states is the amount S by which the Clauser-Horne-Shimony-Holt inequality is violated: nothing is known about the nature of the system or the measurements that are performed. We discuss how the quality of the source can be assessed in this black-box scenario, as compared to an ideal source that would produce maximally entangled states (more precisely, any state for which S=22). To this end, we present several inequivalent notions of fidelity, each one related to the use one can make of the source after having assessed it, and we derive quantitative bounds for each of them in terms of the violation S. We also derive a lower bound on the entanglement of the source as a function of S only. © 2009 The American Physical Society.
Source Title: Physical Review A - Atomic, Molecular, and Optical Physics
ISSN: 10502947
DOI: 10.1103/PhysRevA.80.062327
Appears in Collections:Staff Publications

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