For any even d, an exchange-symmetrized qudit Bell basis exists, and linear-evolution local-measurement devices can distinguish 2d-1 of its Bell states, the maximum allowed.
first” particle detection there are only 2d available “second
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Exchange-Symmetrized Qudit Bell Bases and Bell-State Distinguishability
For any even d, an exchange-symmetrized qudit Bell basis exists, and linear-evolution local-measurement devices can distinguish 2d-1 of its Bell states, the maximum allowed.