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Updated: Aug 11, 2026

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
Bounds on multipartite entangled orthogonal state discrimination using local operations and classical communication
M Hayashi1, D Markham, M Murao
1Imai Quantum Computation and Information Project, ERATO, JST, Tokyo 113-0033, Japan.
Abstract:
We show that entanglement guarantees difficulty in the discrimination of orthogonal multipartite states locally. The number of pure states that can be discriminated by local operations and classical communication is bounded by the total dimension over the average entanglement. A similar, general condition is also shown for pure and mixed states. These results offer a rare operational interpretation for three abstractly defined distancelike measures of multipartite entanglement.
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