Measurement Device Independent Verification of Quantum Channels
Abstract
The capability to reliably transmit and store quantum information is an essential building block for future quantum networks and processors. Gauging the ability of a communication link or quantum memory to preserve quantum correlations is therefore vital for their technological application. Here, we experimentally demonstrate a measurement-device-independent protocol for certifying that an unknown channel acts as an entanglement-preserving channel. Our results show that, even under realistic experimental conditions, including imperfect single-photon sources and the various kinds of noise---in the channel or in detection---where other verification means would fail or become inefficient, the present verification protocol is still capable of affirming the quantum behaviour in a faithful manner without requiring any trust on the measurement device.
Keywords
Cite
@article{arxiv.1906.11130,
title = {Measurement Device Independent Verification of Quantum Channels},
author = {Francesco Graffitti and Alexander Pickston and Peter Barrow and Massimiliano Proietti and Dmytro Kundys and Denis Rosset and Martin Ringbauer and Alessandro Fedrizzi},
journal= {arXiv preprint arXiv:1906.11130},
year = {2020}
}
Comments
5 pages, 3 figures, 6 pages supplementary materials