Correlations in star networks: from Bell inequalities to network inequalities
Sign Up to like & getrecommendations! Published in 2017 at "New Journal of Physics"
DOI: 10.1088/1367-2630/aa7673
Abstract: The problem of characterizing classical and quantum correlations in networks is considered. Contrary to the usual Bell scenario, where distant observers share a physical system emitted by one common source, a network features several independent… read more here.
Keywords: network; correlations star; bell inequality; network inequalities ... See more keywords
The binary-outcome detection loophole
Sign Up to like & getrecommendations! Published in 2021 at "New Journal of Physics"
DOI: 10.1088/1367-2630/ac10a5
Abstract: The detection loophole problem arises when quantum devices fail to provide an output for some runs. If treating these devices in a device-independent manner, failure to include the unsuccessful runs in the output statistics can… read more here.
Keywords: detection; bell inequality; detection threshold; outcome detection ... See more keywords
Device-independent randomness based on a tight upper bound of the maximal quantum value of chained inequality
Sign Up to like & getrecommendations! Published in 2023 at "Physical Review A"
DOI: 10.1103/physreva.107.052415
Abstract: The violation of Bell inequality not only provides the most radical departure of quantum theory from classical concepts, but also paves the way of applications in such as device independent randomness certification. Here, we derive… read more here.
Keywords: independent randomness; device independent; bell inequality; upper bound ... See more keywords
Trade-offs in multiparty Bell-inequality violations in qubit networks
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review A"
DOI: 10.1103/physreva.98.022133
Abstract: Two overlapping bipartite binary input Bell inequalities cannot be simultaneously violated as this would contradict the usual no-signalling principle. This property is known as monogamy of Bell inequality violations and generally Bell monogamy relations refer… read more here.
Keywords: bell inequalities; bell inequality; bell; trade offs ... See more keywords
Does large quantum Fisher information imply Bell correlations?
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review A"
DOI: 10.1103/physreva.99.040101
Abstract: The quantum Fisher information (QFI) of certain multipartite entangled quantum states is larger than what is reachable by separable states, providing a metrological advantage. Are these nonclassical correlations strong enough to potentially violate a Bell… read more here.
Keywords: bell inequality; quantum fisher; bell correlations; fisher information ... See more keywords
Entanglement of Nambu Spinors and Bell Inequality Test without Beam Splitters.
Sign Up to like & getrecommendations! Published in 2022 at "Physical review letters"
DOI: 10.1103/physrevlett.129.120507
Abstract: The identification of electronic entanglement in solids remains elusive so far, which is owed to the difficulty of implementing spinor-selective beam splitters with tunable polarization direction. Here, we propose to overcome this obstacle by producing… read more here.
Keywords: spinors bell; nambu spinors; beam; beam splitters ... See more keywords
Exponentially Decreasing Critical Detection Efficiency for Any Bell Inequality.
Sign Up to like & getrecommendations! Published in 2022 at "Physical review letters"
DOI: 10.1103/physrevlett.129.230403
Abstract: We address the problem of closing the detection efficiency loophole in Bell experiments, which is crucial for real-world applications. Every Bell inequality has a critical detection efficiency η that must be surpassed to avoid the… read more here.
Keywords: detection efficiency; detection; bell inequality; bell ... See more keywords
Observations of Bell Inequality Violations with Causal Isolation between Source and Detectors
Sign Up to like & getrecommendations! Published in 2022 at "Entropy"
DOI: 10.3390/e24091230
Abstract: We report the experimental observations of Bell inequality violations (BIV) in entangled photons causally separated by a rotating mirror. A Foucault mirror gating geometry is used to causally isolate the entangled photon source and detectors.… read more here.
Keywords: observations bell; bell inequality; source; inequality violations ... See more keywords
On the Fidelity Robustness of CHSH–Bell Inequality via Filtered Random States
Sign Up to like & getrecommendations! Published in 2023 at "Entropy"
DOI: 10.3390/e25010094
Abstract: The theorem developed by John Bell constituted the starting point of a revolution that translated a philosophical question about the nature of reality into the broad and intense field of research of the quantum information… read more here.
Keywords: fidelity robustness; bell; chsh bell; bell inequality ... See more keywords