Unconditionally secure quantum commitments with preprocessing

Friday, February 16, 2024 - 10:30am to 12:00pm
G-882 Hewlett Room
Luowen Qian

Abstract: We demonstrate how to build computationally secure commitment schemes with the aid of quantum auxiliary inputs without unproven complexity assumptions. Furthermore, the quantum auxiliary input can be prepared either (1) efficiently through a trusted setup similar to the classical common random string model, or (2) strictly between the two involved parties in uniform exponential time. Classically this remains impossible without first proving P \neq NP. Based on: https://arxiv.org/abs/2311.18171