Free-space communication through turbulence: a comparison of plane-wave and orbital-angular-momentum encodings
Abstract
Free-space communication allows one to use spatial mode encoding, which is susceptible to the effects of diffraction and turbulence. Here, we discuss the optimum communication modes of a system while taking such effects into account. We construct a free-space communication system that encodes information onto the plane-wave (PW) modes of light. We study the performance of this system in the presence of atmospheric turbulence, and compare it with previous results for a system employing orbital-angular-momentum (OAM) encoding. We are able to show that the PW basis is the preferred basis set for communication through atmospheric turbulence for a system with a large Fresnel number product. This study has important implications for high-dimensional quantum key distribution systems.
Additional Information
© 2014 Informa UK. Received 01 Mar 2013, Accepted 07 Aug 2013, Published online: 04 Oct 2013. We would like to thank Stephen Barnett, David Miller, and Daniel Gauthier for helpful discussions. This work was supported by the DARPA/DSO InPho program and the Canadian Excellence Research Chair (CERC) program.Attached Files
Submitted - 1304.0709.pdf
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Additional details
- Eprint ID
- 96910
- Resolver ID
- CaltechAUTHORS:20190708-151341518
- Defense Advanced Research Projects Agency (DARPA)
- Canada Research Chairs Program
- Created
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2019-07-15Created from EPrint's datestamp field
- Updated
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2021-11-16Created from EPrint's last_modified field