Adaptable transmitter for discrete and continuous variable quantum key distribution
Abstract
We present a versatile transmitter capable of performing both discrete variable and continuous variable quantum key distribution protocols (DV-QKD and CV-QKD, respectively). Using this transmitter, we implement a time-bin encoded BB84 DV-QKD protocol over a physical quantum channel of 47 km and a GG02 CV-QKD protocol with true local oscillator over a 10.5 km channel, achieving secret key rates of 4.1 kbps and 1 Mbps for DV- and CV-QKD, respectively. The reported transmitter scheme is particularly suitable for re-configurable optical networks where the QKD protocol is selected to optimize the performance according to the parameters of the links.
- Publication:
-
Optics Express
- Pub Date:
- May 2021
- DOI:
- 10.1364/OE.425382
- Bibcode:
- 2021OExpr..2914815L