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

EPJ Quantum Technology - Tập 10 Số 1 - 2023
Qunfeng Dai1, Junyu Quan2, Xiaoping Lou3, Qin Li1
1School of Computer Science, Xiangtan University, Xiangtan, China
2School of Mathematics and Computational Science, Xiangtan University, Xiangtan, China
3College of Information Science and Engineering, Hunan Normal University, Changsha, China

Tóm tắt

AbstractBlind 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.

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EPJ Quantum Technology

Tập 10 Số 1

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