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Estimating the Schmidt numbers of quantum states via symmetric measurements
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The Schmidt numbers quantify the entanglement degree of quantum states. Quantum states with high Schmidt numbers provide a larger advantage in various quantum information processing tasks compared to quantum states with low Schmidt numbers. We derive a Schmidt number criterion based on the trace norm of the correlation matrix obtained from symmetric measurements. We show that our result is more effective than and superior to existing Schmidt number criteria by detailed examples.
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Exploring entanglement, Wigner negativity and Bell nonlocality for anisotropic two-qutrit states
A numerical survey of three quantum resources for noisy anisotropic two-qutrit states, with an inconsistent Wigner computation and a known Bell-optimality result presented as new.
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