Ancilla-driven blind quantum computation for clients with different quantum capabilities

EPJ Quantum Technology

Research

Xiaoping Lou¹  Qunfeng Dai²  Qin Li²  Junyu Quan³ 

[1] College of Information Science and Engineering, Hunan Normal University, Changsha, China;School of Computer Science, Xiangtan University, Xiangtan, China;School of Mathematics and Computational Science, Xiangtan University, Xiangtan, China;

关键词: Blind quantum computation;    Verifiable blind quantum computation;    Ancilla-driven quantum computation;    Quantum entanglement;   

DOI  :  10.1140/epjqt/s40507-023-00173-2

 received in 2022-05-14, accepted in 2023-05-15,  发布年份 2023

来源: Springer

【 摘 要 】

Blind quantum computation (BQC) allows a client with limited quantum power to delegate his quantum computational task to a powerful server and still keep his input, output, and algorithm private. There are mainly two kinds of models about BQC, namely circuit-based and measurement-based models. In addition, a hybrid model called ancilla-driven universal blind quantum computation (ADBQC) was proposed by combining the properties of both circuit-based and measurement-based models, where all unitary operations on the register qubits can be realized with the aid of single ancilla coupled to the register qubits. However, in the ADBQC model, the quantum capability of the client is strictly limited to preparing single qubits. If a client can only perform single-qubit measurements or a few simple quantum gates, he will not be able to perform ADBQC. This paper solves the problem and extends the existing model by proposing two types of ADBQC protocols for clients with different quantum capabilities, such as performing single-qubit measurements or single-qubit gates. Furthermore, in the two proposed ADBQC protocols, clients can detect whether servers are honest or not with a high probability by using corresponding verifiable techniques.

【 授权许可】

CC BY   
© The Author(s) 2023

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