Non-destructive Orthonormal State Discrimination
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We provide explicit quantum circuits for the non-destructive deterministic discrimination of Bell states in the Hilbert space $C^{d^{n}}$, where $d$ is qudit dimension. We discuss a method for generalizing this to non-destructive measurements on any set of orthogonal states distributed among $n$ parties.
From the practical viewpoint, we show that such non-destructive measurements can help lower quantum communication complexity under certain conditions.
11 pages, 6 fugures
11 pages, 6 fugures