Correcting lossy channels with heralded amplification

Sergei Slussarenko

doi:10.1117/12.2603521

13 July 2021 Correcting lossy channels with heralded amplification

Sergei Slussarenko

Author Affiliations +

Proceedings Volume 11844, Photonics for Quantum 2021; 118440B (2021) https://doi.org/10.1117/12.2603521
Event: Photonics for Quantum, 2021, Online Only

Abstract

Loss-induced errors are inevitable in long-distance information transfer and lead to quantum state degradation in quantum communication. It is possible to reduce the effect of loss on a quantum state using probabilistic quantum amplification which, however, destroys the input state in cases when it fails. Instead, what we present here is a realization of an error-corrected quantum channel, where we prepare a purified copy of entanglement. Upon success over this operation, it can be used to teleport the state over the so-improved channel. We test our channel by using it to transmit entanglement through a large amount of loss and demonstrate improved performance over direct transmission, without relying on post-selection.

Conference Presentation

Citation Download Citation

Sergei Slussarenko "Correcting lossy channels with heralded amplification", Proc. SPIE 11844, Photonics for Quantum 2021, 118440B (13 July 2021); https://doi.org/10.1117/12.2603521

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