.png){kind=icon}
.png){kind=icon}
Return
Robust polarization state generation for long-range quantum key distribution
.png){kind=icon}
OA
AI
DOI：10.1364/OE.481797.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
We present a new compact and robust polarization state transmitter designed to execute the BB84 quantum key distribution protocol. Our transmitter prepares polarization states using a single commercial-off-the-shelf phase modulator. Our scheme does not require global biasing to compensate thermal and mechanical drifts, as both of the system's two time-demultiplexed polarization modes share a single optical path. Furthermore, the transmitter's optical path entails a double-pass through the phase modulation device for each polarization mode, allowing multiple phase rotations to be impinged on each light pulse. We present a proof-of-concept prototype of this transmitter topology and demonstrate a mean intrinsic quantum bit error rate below 0.2% over a 5 hour measurement.(c) 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
Keywords:
FREE-SPACE
HIGH-SPEED
DISTRIBUTION-SYSTEM
Journal
IF:
3.3
Papers:
6.1W
Citations:
14.3W