Document Type
Article
Publication Date
4-5-2012
Abstract
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.
Recommended Citation
P. B. Dixon, G. A. Howland, J. Schneeloch, and J. C. Howell, Quantum Mutual Information Capacity for High-Dimensional Entangled States, Phys. Rev. Lett. 108(14), 143603. https://doi.org/10.1103/PhysRevLett.108.143603
Peer Reviewed
1
Copyright
American Physical Society
Comments
This article was originally published in Physical Review Letters, volume 108, issue 14, in 2012. https://doi.org/10.1103/PhysRevLett.108.143603