Alvaro Padilla, Geoffrey W. Burr, et al.
IEEE T-ED
We have improved the hardware and software of our autocompensating system for quantum key distribution by replacing bulk optical components at the end stations with fiber-optic equivalents and implementing software that synchronizes end-station activities, communicates basis choices, corrects errors, and performs privacy amplification over a local area network. The all-fiber-optic arrangement provides stable, efficient, and high-contrast routing of the photons. The low-bit error rate leads to high errorcorrection efficiency and minimizes data sacrifice during privacy amplification. Characterization measurements made on a number of commercial avalanche photodiodes are presented that highlight the need for improved devices tailored specifically for quantum information applications. A scheme for frequency shifting the photons returning from Alice’s station to allow them to be distinguished from backscattered noise photons is also described. © 2002 Optical Society of America.
Alvaro Padilla, Geoffrey W. Burr, et al.
IEEE T-ED
Donald S. Bethune, Charles T. Rettner, et al.
IQEC 1984
Paul A. Merolla, John V. Arthur, et al.
Science
Alvaro Padilla, Geoffrey W. Burr, et al.
DRC 2014