This #OPG_Optica study paves the way for the deployment of large-scale twin-field QKD networks enabled by compact, low-cost and high-yield chip-based devices: https://bit.ly/4eAZJwK The research team exploited optical injection locking to implement phase dissemination to independent lasers onto photonic circuits, demonstrating complete phase control on the same chip with electro-optic phase modulators. The study confirms that exploiting the linewidth narrowing effect of optical injection locking can prove a promising alternative to further reduce the deployment costs of TF QKD in asymmetric channels. Written by: Han Du, Taofiq K. Paraiso, Mirko Pittaluga, Yuen San Lo, Joseph A. Dolphin, and Andrew J. Shields #QKD #quantum #quantumphysics #technology #photonics #physics
