Journal
PHYSICAL REVIEW A
Volume 93, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.93.040102
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Funding
- EU
- ERC CoG QITBOX
- F.R.S.-FNRS under the project DIQIP
- Brussels-Capital Region through a BB2B grant
- Spanish project FOQUS
- Generalitat de Catalunya [SGR875]
- Hungarian National Research Fund OTKA [K111734]
- Janos Bolyai Programme of the Hungarian Academy of Sciences
- John Templeton Foundation
- FRS-FNRS
- ICREA Funding Source: Custom
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By performing local projective measurements on a two-qubit entangled state one can certify in a device-independent way up to one bit of randomness. We show here that general measurements, defined by positive-operator-valued measures, can certify up to two bits of randomness, which is the optimal amount of randomness that can be certified from an entangled bit. General measurements thus provide an advantage over projective ones for device-independent randomness certification.
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