Measurement-only verifiable blind quantum computing with quantum input verification

TL;DR

This paper introduces a new measurement-only verifiable blind quantum computing protocol that allows clients to verify the correctness of quantum inputs, enhancing security and verifiability in delegated quantum computing.

Contribution

It presents a novel protocol enabling clients with limited quantum capabilities to verify both computation and quantum input correctness.

Findings

Protocol achieves input verification in measurement-only blind quantum computing.

Enhances security by enabling clients to verify quantum input correctness.

Supports secure delegated quantum computing with minimal client quantum technology.

Abstract

Verifiable blind quantum computing is a secure delegated quantum computing where a client with a limited quantum technology delegates her quantum computing to a server who has a universal quantum computer. The client's privacy is protected (blindness) and the correctness of the computation is verifiable by the client in spite of her limited quantum technology (verifiability). There are mainly two types of protocols for verifiable blind quantum computing: the protocol where the client has only to generate single-qubit states, and the protocol where the client needs only the ability of single-qubit measurements. The latter is called the measurement-only verifiable blind quantum computing. If the input of the client's quantum computing is a quantum state whose classical efficient description is not known to the client, there was no way for the measurement-only client to verify the correctness of the input. Here we introduce a new protocol of measurement-only verifiable blind quantum computing where the correctness of the quantum input is also verifiable.