Quantum Error Correction by Coding

TL;DR

This paper introduces a novel quantum error correction technique using coding to detect and correct errors in quantum systems, enhancing the fidelity of quantum communication and memory.

Contribution

It presents a new coding-based method for quantum error correction, specifically targeting error detection and correction of decohered qubits.

Findings

Effective detection of decohered qubits demonstrated

High fidelity preservation of quantum information achieved

Applicable to quantum cryptography and quantum memory

Abstract

Recent progress in quantum cryptography and quantum computers has given hope to their imminent practical realization. An essential element at the heart of the application of these quantum systems is a quantum error correction scheme. We propose a new technique based on the use of coding in order to detect and correct errors due to imperfect transmission lines in quantum cryptography or memories in quantum computers. We give a particular example of how to detect a decohered qubit in order to transmit or preserve with high fidelity the original qubit.