Fault-Tolerant Exact State Transmission

TL;DR

This paper demonstrates a fault-tolerant quantum state transmission method using XY-type models, resilient to various imperfections and noises, with a proposed implementation in optical lattices.

Contribution

It introduces a fault-tolerant design for quantum state transmission that is robust against multiple types of system failures and imperfections.

Findings

High-fidelity transmission in XY-type models regardless of coupling details

Fault-tolerance thresholds established for various failure modes

Implementation scheme proposed using optical lattices with hard-core bosons

Abstract

We show that a category of one-dimensional XY-type models may enable high-fidelity quantum state transmissions, regardless of details of coupling configurations. This observation leads to a fault- tolerant design of a state transmission setup. The setup is fault-tolerant, with specified thresholds, against engineering failures of coupling configurations, fabrication imperfections or defects, and even time-dependent noises. We propose the implementation of the fault-tolerant scheme using hard-core bosons in one-dimensional optical lattices.