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Necessary and Sufficient Conditions for Extended Noncontextuality in a Broad Class of Quantum Mechanical Systems
Janne V. Kujala, Ehtibar N. Dzhafarov, Jan-Åke Larsson
The notion of (non)contextuality pertains to sets of properties measured one subset (context) at a time. We extend this notion to include so-called inconsistently connected systems…
Hacking energy-time entanglement-based systems with classical light
Jonathan Jogenfors, Ashraf M. Elhassan, Johan Ahrens +2
Photonic systems based on energy-time entanglement have been proposed to test local realism using the Bell inequality. A violation of this inequality normally also certifies securi…
Requirements for a loophole-free photonic Bell test using imperfect setting generators
Johannes Kofler, Marissa Giustina, Jan-Åke Larsson +1
Experimental violations of Bell inequalities are in general vulnerable to so-called "loopholes." In this work, we analyse the characteristics of a loophole-free Bell test with phot…
Contextuality in Three Types of Quantum-Mechanical Systems
Ehtibar N. Dzhafarov, Janne V. Kujala, Jan-Åke Larsson
We present a formal theory of contextuality for a set of random variables grouped into different subsets (contexts) corresponding to different, mutually incompatible conditions. Wi…
Loopholes in Bell Inequality Tests of Local Realism
Jan-Åke Larsson
Bell inequalities are intended to show that local realist theories cannot describe the world. A local realist theory is one where physical properties are defined prior to and indep…