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@article{1742521,
author = {Valencia, N.H. and Srivastav, V. and Pivoluska, Matej and Huber, M. and Friis, N. and McCutcheon, W. and Malik, M.},
article_location = {WIEN},
article_number = {December},
doi = {http://dx.doi.org/10.22331/q-2020-12-24-376},
keywords = {entanglement; qudits},
language = {eng},
issn = {2521-327X},
journal = {QUANTUM},
title = {High-Dimensional Pixel Entanglement: Efficient Generation and Certification},
url = {https://doi.org/10.22331/q-2020-12-24-376},
volume = {4},
year = {2020}
}
TY - JOUR
ID - 1742521
AU - Valencia, N.H. - Srivastav, V. - Pivoluska, Matej - Huber, M. - Friis, N. - McCutcheon, W. - Malik, M.
PY - 2020
TI - High-Dimensional Pixel Entanglement: Efficient Generation and Certification
JF - QUANTUM
VL - 4
IS - December
SP - 376
EP - 376
PB - VEREIN FORDERUNG OPEN ACCESS PUBLIZIERENS QUANTENWISSENSCHAF
SN - 2521327X
KW - entanglement
KW - qudits
UR - https://doi.org/10.22331/q-2020-12-24-376
L2 - https://doi.org/10.22331/q-2020-12-24-376
N2 - Photons offer the potential to carry large amounts of information in their spectral, spatial, and polarisation degrees of freedom. While state-of-the-art classical communication systems routinely aim to maximize this information-carrying capacity via wavelength and spatial-mode division multiplexing, quantum systems based on multi-mode entanglement usually suffer from low state quality, long measurement times, and limited encoding capacity. At the same time, entanglement certification methods often rely on assumptions that compromise security. Here we show the certification of photonic high-dimensional entanglement in the transverse position-momentum degree-of-freedom with a record quality, measurement speed, and entanglement dimensionality, without making any assumptions abolit the state or channels. Using a tailored macro-pixel basis, precise spatial-mode measurements, and a modified entanglement witness, we demonstrate state fidelities of up to 94.4% in a 19-dimensional state-space, entanglement in up to 55 local dimensions, and an entanglement-of-formation of up to 4 obits. Furthermore, our measurement times show an improvement of more than two orders of magnitude over previous state-of-the-art demonstrations. Our results pave the way for noise-robust quantum networks that saturate the information-carrying capacity of single photons.
ER -
VALENCIA, N.H., V. SRIVASTAV, Matej PIVOLUSKA, M. HUBER, N. FRIIS, W. MCCUTCHEON and M. MALIK. High-Dimensional Pixel Entanglement: Efficient Generation and Certification. \textit{QUANTUM}. WIEN: VEREIN FORDERUNG OPEN ACCESS PUBLIZIERENS QUANTENWISSENSCHAF, 2020, vol.~4, December, p.~376-394. ISSN~2521-327X. Available from: https://dx.doi.org/10.22331/q-2020-12-24-376.
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