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Entanglement-Assisted Communication Surpassing the Ultimate Classical Capacity

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Abstract

We report experimental entanglement-assisted communication above the ultimate classical capacity set by the Holevo-Schumacher-Westmorel bound. A high-efficiency entanglement source and a phase-conjugate quantum receiver reap the benefit of pre-shared entanglement over lossy and noisy channels.

© 2021 The Author(s)

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