Please use this identifier to cite or link to this item: https://doi.org/10.1103/PhysRevLett.109.180401
Title: Device-independent bounds for Hardy's experiment
Authors: Rabelo, R.
Zhi, L.Y.
Scarani, V. 
Issue Date: 31-Oct-2012
Citation: Rabelo, R., Zhi, L.Y., Scarani, V. (2012-10-31). Device-independent bounds for Hardy's experiment. Physical Review Letters 109 (18) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevLett.109.180401
Abstract: In this Letter, we compute an analogue of Tsirelson's bound for Hardy's test of nonlocality, that is, the maximum violation of locality constraints allowed by the quantum formalism, irrespective of the dimension of the system. The value is found to be the same as the one achievable already with two-qubit systems, and we show that only a very specific class of states can lead to such maximal value, thus highlighting Hardy's test as a device-independent self-test protocol for such states. By considering realistic constraints in Hardy's test, we also compute device-independent upper bounds on this violation and show that these bounds are saturated by two-qubit systems, thus showing that there is no advantage in using higher-dimensional systems in experimental implementations of such a test. © 2012 American Physical Society.
Source Title: Physical Review Letters
URI: http://scholarbank.nus.edu.sg/handle/10635/96211
ISSN: 00319007
DOI: 10.1103/PhysRevLett.109.180401
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