# Blind quantum computation with a heralded single photon source

## TL;DR

This paper demonstrates that using a heralded single photon source and photon number resolving detectors enhances the efficiency and distance of blind quantum computation protocols by reducing noise and improving security.

## Contribution

The study introduces a method employing heralded single photon sources and photon number resolving detectors to improve blind quantum computation performance.

## Key findings

- Higher blind state generation efficiency achieved
- Extended access distance demonstrated
- Noise reduction through heralding improves security

## Abstract

Blind quantum computation is a scheme that adds unconditional security to cloud quantum computation. In the protocol proposed by Broadbent, Fitzsimons, and Kashefi, the ability to prepare and transmit a single qubit is required for a user (client) who uses a quantum computer remotely. In case a weak coherent pulse is used as a pseudo single photon source, however, we must introduce decoy states, owing to the inherent risk of transmitting multiple photon. In this study, we demonstrate that by using a heralded single photon source and a probabilistic photon number resolving detector, we can gain a higher blind state generation efficiency and longer access distance, owing to noise reduction on account of the heralding signal.