Non-destructive Orthonormal State Discrimination

Details Non-destructive Orthonormal State Discrimination Non-destructive Orthonormal State Discrimination

2005-07-11

arxiv.org/abs/quant-ph/0507096v1

Physics

Quantum Physics

11 pages, 6 fugures

Scientific paper

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.

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