Semi-device-independent quantum key distribution based on a coherence equality
Year: 2021
Type: preprint
Abstract: We introduce the first example of a semi-device-independent quantum key distribution (SDI-QKD) protocol with a classical Alice and Bob. The protocol is based on the Coherence Equality (CE) game recently introduced by del Santo and Dakic, which verifies a coherent quantum superposition of communication trajectories in a de-localized way. We show the protocol to be semi-device-independent since the only trusted operations occur in the users' labs, and establish security against an adversary with bounded quantum memory. Finally, we recast the setup of the protocol as a counterfactual test of nonlocality, and provide additional insight into the CE game.
Source: arXiv (Cornell University)
Authors: Mário Silva, Ricardo Faleiro, Paulo Mateus
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W3134019634