2019/07/31 by Andrew J. P. Garner, Marius Krumm, Markus P. Müller +1
Computer Science · Physics and Astronomy · #Advanced Statistical Modeling Techniques #Bipartite graph #Construct (python library) #Cryptography #Degrees of freedom (physics and chemistry) #Information processing #Noise (video) #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum nonlocality #quant-ph
paper · pdf · doi:10.1103/physrevresearch.2.013112
published as Phys. Rev. Research 2, 013112 (2020) · Authors' accepted manuscript
openalex created_date 2019/07/30 · arxiv created 2020/02/03 · openalex publication_date 2020/02/03 · arxiv updated 2020/02/12 · openalex updated_date 2026/08/05
Bell Nonlocality enables device-independent cryptographic tasks on untrusted apparatus. The authors consider when the inputs to such devices are spatiotemporal - that is, angles, directions, or time durations. They are able to show that the statistical response of the device must respect the spatiotemporal input's symmetries. They construct a ``Bell witness'' for certifying nonlocality, a general hidden-variable model for noisy correlations, and suggest a characterization of bipartite two-binary-measurement ``(2,2,2)'' quantum correlations.