A standard quantum walk produces admissible post-quantum correlations exceeding Tsirelson's bound via complementarity-violating coin preparation, but these correlations are suppressed by coarse-grained position measurements.
Kempe, Quantum random walks: an introductory overview, Contemporary Physics44, 307 (2003)
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Discrete-time quantum walks are constructed on Fock-state lattices via Lie algebra displacement operators, producing ballistic spreading, coin-walker entanglement, and anomalous effects such as super-ballistic spreading or localization.
QSBAI applies quantum walks to best-arm identification on general graphs, deriving maximal success probability and optimal time steps for complete and bipartite cases.
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Operationally Admissible Post-Quantum Correlations from a Standard Quantum Walk
A standard quantum walk produces admissible post-quantum correlations exceeding Tsirelson's bound via complementarity-violating coin preparation, but these correlations are suppressed by coarse-grained position measurements.
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Discrete-time quantum walks in synthetic dimensions
Discrete-time quantum walks are constructed on Fock-state lattices via Lie algebra displacement operators, producing ballistic spreading, coin-walker entanglement, and anomalous effects such as super-ballistic spreading or localization.