Quantum Mutual Information Capacity for High-Dimensional Entangled States
Author(s)
Dixon, P. Ben; Howland, Gregory A.; Schneeloch, James; Howell, John C.
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High-dimensional Hilbert spaces used for quantum communication channels offer the possibility of large data transmission capabilities. We propose a method of characterizing the channel capacity of an entangled photonic state in high-dimensional position and momentum bases. We use this method to measure the channel capacity of a parametric down-conversion state by measuring in up to 576 dimensions per detector. We achieve a channel capacity over 7 bits/photon in either the position or momentum basis. Furthermore, we provide a correspondingly high-dimensional separability bound that suggests that the channel performance cannot be replicated classically.
Date issued
2012-04Department
Massachusetts Institute of Technology. Research Laboratory of ElectronicsJournal
Physical Review Letters
Publisher
American Physical Society
Citation
Dixon, P. et al. “Quantum Mutual Information Capacity for High-Dimensional Entangled States.” Physical Review Letters 108.14 (2012). © 2012 American Physical Society
Version: Final published version
ISSN
0031-9007
1079-7114