Measurement Geometry for Quantum Random Access Codes: Beyond Nayak Bound Toward Optimality

Reformulates quantum random access codes through measurement geometry, proving stronger finite-size bounds beyond Nayak's classical limit. Introduces mutually unbiased projector-valued measurements for optimal decoder design and constructs (M+2,M)-QRACs achieving conjectured b...

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http://arxiv.org/abs/2606.12700v1