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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A protocol maps arbitrary linear transformations to coin and step operators of a quantum walk, then to experimental settings in a time-multiplexed hybrid photonic platform, with claims of scalability and resilience to imperfections.
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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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Resource-efficient universal photonic processor based on time-multiplexed hybrid architectures
A protocol maps arbitrary linear transformations to coin and step operators of a quantum walk, then to experimental settings in a time-multiplexed hybrid photonic platform, with claims of scalability and resilience to imperfections.