Publication details
Distribution of genuine high-dimensional entanglement over 10.2 km of noisy metropolitan atmosphere
Authors | |
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Year of publication | 2023 |
Type | Article in Periodical |
Magazine / Source | PHYSICAL REVIEW A |
MU Faculty or unit | |
Citation | |
Web | https://doi.org/10.1103/PhysRevA.107.L050402 |
Doi | http://dx.doi.org/10.1103/PhysRevA.107.L050402 |
Keywords | non-locality; entanglement; high-dimensional quantum states |
Description | Our study investigates the presence of high-dimensional entanglement in a recent demonstration of a noise-resistant quantum key distribution (QKD) protocol presented in [Phys. Rev. X 13, 021001 (2023)]. We determined that it is possible to certify the dimensionality of the distributed entangled states to be at least three. To demonstrate this, we developed an energy-time entanglement discretization technique, as well as an improved witness for entanglement dimensionality. Our results provide insight into the complex relationship between high-dimensional entanglement and the noise resistance of QKD protocols operating in high dimensions. |
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