Applying Quantum Error-correcting Codes for Fault-tolerant Blind Quantum Cloud Computation

TL;DR

This paper introduces a fault-tolerant blind quantum computation protocol using quantum error-correcting codes, enhancing error correction and resource efficiency in secure quantum cloud computing.

Contribution

It proposes a novel fault-tolerant BQC protocol with quantum error-correcting codes and applies concatenated codes to improve error correction and resource management.

Findings

Improved error correction performance with concatenated codes

Reduced quantum resource consumption and photon pulse requirements

Enhanced efficiency and fault-tolerance in blind quantum computation

Abstract

Blind Quantum Computation (BQC) is a delegation computing protocol that allows a client to utilize a remote quantum server to implement desired quantum computations while keeping her inputs, outputs, and algorithms private. However, qubit errors during the quantum computation are important issues that need to be addressed. In this paper, we propose a fault-tolerant blind quantum computation protocol with quantum error-correcting codes to avoid the accumulation and propagation of qubit errors during the computational process. We further propose to apply the concatenated codes in the protocol to improve the error correction performance. More importantly, we quantify the resource consumption of photon pulses by our optimal level concatenation codes. Extensive simulation results show that our scheme not only can improve the preparation efficiency but also reduce quantum resource consumption, which shows a significant improvement to realize a fault-tolerant BQC.