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Entanglement-based quantum communication secured by nonlocal dispersion cancellation

Author(s)
Lee, Catherine; Zhang, Zheshen; Steinbrecher, Gregory R.; Zhou, Hongchao; Mower, Jacob; Zhong, Tian; Wang, Ligong; Hu, Xiaolong; Horansky, Robert D.; Verma, Varun B.; Lita, Adriana E.; Mirin, Richard P.; Marsili, Francesco; Shaw, Matthew D.; Nam, Sae Woo; Wornell, Gregory W.; Wong, Franco N. C.; Shapiro, Jeffrey H.; Englund, Dirk Robert; ... Show more Show less
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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Abstract
Quantum key distribution (QKD) enables participants to exchange secret information over long distances with unconditional security. However, the performance of today's QKD systems is subject to hardware limitations, such as those of available nonclassical-light sources and single-photon detectors. By encoding photons in high-dimensional states, the rate of generating secure information under these technical constraints can be maximized. Here, we demonstrate a complete time-energy entanglement-based QKD system with proven security against the broad class of arbitrary collective attacks. The security of the system is based on nonlocal dispersion cancellation between two time-energy entangled photons. This resource-efficient QKD system is implemented at telecommunications wavelength, is suitable for optical fiber and free-space links, and is compatible with wavelength-division multiplexing.
Date issued
2014-12
URI
http://hdl.handle.net/1721.1/92715
Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science; Massachusetts Institute of Technology. Research Laboratory of Electronics
Journal
Physical Review A
Publisher
American Physical Society
Citation
Lee, Catherine, et al. "Entanglement-based quantum communication secured by nonlocal dispersion cancellation." Phys. Rev. A 90, 062331 (December 2014). © 2014 American Physical Society
Version: Final published version
ISSN
1050-2947
1094-1622

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