Universal Single-Server Blind Quantum Computation for Classical Clients

TL;DR

This paper introduces a universal blind quantum computation protocol enabling a nearly classical client to securely delegate quantum tasks to a single server, with potential for practical cloud-based quantum services.

Contribution

It presents a novel single-server protocol allowing almost-classical clients to perform secure quantum computations, and enhances it to fully-classical clients with improved trusted center capabilities.

Findings

Protocol achieves secure delegation with minimal client quantum requirements

Modified protocol enables fully-classical clients to perform blind quantum computation

Proposes a new 'Cloud + Certificate Authority' model for practical deployment

Abstract

Blind quantum computation allows a client without enough quantum technologies to delegate her quantum computation to a remote quantum server, while keeping her input, output and algorithm secure. In this paper, we propose a universal single-server and almost-classical-client blind quantum computation protocol. In this protocol, the client interfaces with only one server and the only ability of the client required is to get particles from the trusted center and forward them to the server. We present an analysis of this protocol and modify it to a universal single-server and fully-classical-client blind quantum computation protocol by improving the ability of the trusted center. Based on our protocols and recent works, a new "Cloud + Certificate Authority (CA)" style is proposed for the blind quantum computation.