Title :
Beyond 1Mb/s free-space optical quantum key distribution
Author :
Cvijetic, Milorad ; Takashima, Youichi
Author_Institution :
Univ. of Arizona, Tucson, AZ, USA
Abstract :
We consider the schemes that would lead to the increase in the channel capacity of free space optical links (FSO) and propose a novel orthogonal angular momentum (OAM)- and WDM-based MIMO architecture for highspeed QKD in turbulent FSO channels. We evaluated the dependence of OAM-based interference, which notably affects QBER, from the number of OAM states and the turbulence strength. The scheme is numerically verified to support ≥1Mb/s QKD rates in km-scale turbulent links using 5 OAM states and 80 wavelengths.
Keywords :
MIMO communication; angular momentum; channel capacity; error statistics; optical links; quantum cryptography; wavelength division multiplexing; OAM-based interference; QBER; WDM-based MIMO architecture; channel capacity; free space optical links; free-space optical quantum key distribution; high-speed QKD; orthogonal angular momentum; turbulence strength; turbulent FSO channels; turbulent links; Bit rate; Integrated optics; Optical fiber communication; Optical transmitters; Photonics; Protocols; Wavelength division multiplexing; free-space optical communications; orbital angular momentum; quantum key distribution (QKD);
Conference_Titel :
Transparent Optical Networks (ICTON), 2014 16th International Conference on
Conference_Location :
Graz
DOI :
10.1109/ICTON.2014.6876607
