@article{cd6d1f2029a1495eb9f5d1d83cea850c,
title = "Experimental investigation of partially entangled states for device-independent randomness generation and self-testing protocols",
abstract = "Previous theoretical works showed that all pure two-qubit entangled states can generate one bit of local randomness and can be self-tested through the violation of proper Bell inequalities. We report an experiment in which nearly pure partially entangled states of photonic qubits are produced to investigate these tasks in a practical scenario. We show that small deviations from the ideal situation make low entangled states impractical to self-testing and randomness generation using the available techniques. Our results show that in practice lower entanglement implies lower randomness generation, recovering the intuition that maximally entangled states are better candidates for device-independent quantum information processing.",
author = "S. G{\'o}mez and A. Mattar and I. MacHuca and G{\'o}mez, {E. S.} and D. Cavalcanti and Far{\'i}as, {O. Jim{\'e}nez} and A. Ac{\'i}n and G. Lima",
note = "Funding Information: This work was supported by the ERC CoG QITBOX, Spanish MINECO (QIBEQI FIS2016-80773-P, a Ram{\'o}n y Cajal fellowship, and Severo Ochoa SEV-2015-0522), the AXA Chair in Quantum Information Science, Generalitat de Catalunya (SGR1381 and CERCA Programme), Fundaci{\'o} Privada Cellex, FONDECYT (1160400 and 11150325), the Millennium Institute for Research in Optics (MIRO), and PAI-Conicyt (79160083). S.G. acknowledges CONICYT. Publisher Copyright: {\textcopyright} 2019 American Physical Society.",
year = "2019",
month = mar,
day = "12",
doi = "10.1103/PhysRevA.99.032108",
language = "English",
volume = "99",
journal = "Physical Review A",
issn = "2469-9926",
publisher = "American Physical Society",
number = "3",
}