Fault-tolerant quantum error correction code preparation in UBQC

• Published in: Quantum information processing Vol. 19; no. 8
• Main Authors: Zhao, Qiang, Li, Qiong, Mao, Haokun, Wen, Xuan, Han, Qi, Li, Minghui
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.08.2020; Springer Nature B.V
• Subjects: Algorithms; Blindness; Computer simulation; Data Structures and Information Theory; Error correction; Error correction & detection; Fault tolerance; Mathematical Physics; Physics; Physics and Astronomy; Quantum Computing; Quantum Information Technology; Quantum Physics; Qubits (quantum computing); Spintronics; Universal blind quantum computation; Remote blind qubit state preparation; Fault-tolerant quantum computation; Weak coherent pulses; Quantum error correction
• ISSN: 1570-0755; 1573-1332
• DOI: 10.1007/s11128-020-02735-0

The universal blind quantum computation (UBQC) is a scheme to allow a client to delegate a computation to a remote server while concealing the input, output and algorithm. However, the qubit errors are inevitable in the practical application. In this paper, a fault-tolerant quantum error correction code preparation protocol with weak coherent pulses is proposed for fault-tolerant UBQC. Furthermore, the ϵ -correctness and ϵ -blindness of the protocol are fully proven. The simulation results show that the required number of pulses in our protocol is much less than that of the remote blind qubit state preparation protocol with two decoy states in case of the same probability of successful preparation, and is closer to asymptotic case.