In multi-copy state discrimination, qubit strategies beat bit strategies, but some bit-like operational theories outperform qubits even classically, revealing nonlocality without entanglement and providing general bounds.
Discriminating States: The Quantum C hernoff Bound
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Extends Fano bounds to sufficiency of low conditional entropy and defines a quantum entanglement task for infinite-dimensional systems with bounds via maximal singlet fraction of finite-dimensional approximations.
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Nonclassical traits in multi-copy state discrimination
In multi-copy state discrimination, qubit strategies beat bit strategies, but some bit-like operational theories outperform qubits even classically, revealing nonlocality without entanglement and providing general bounds.
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On the coherent extension of some Fano-type learning bounds
Extends Fano bounds to sufficiency of low conditional entropy and defines a quantum entanglement task for infinite-dimensional systems with bounds via maximal singlet fraction of finite-dimensional approximations.