Review of Decoherence Free Subspaces, Noiseless Subsystems, and Dynamical Decoupling

TL;DR

This review introduces key methods like decoherence-free subspaces, noiseless subsystems, and dynamical decoupling for protecting quantum information from noise and decoherence, essential for reliable quantum computing.

Contribution

It offers a comprehensive overview of theoretical frameworks and techniques for quantum error protection, integrating concepts for preserving quantum information and enabling protected computation.

Findings

Summarizes foundational theories of decoherence-free subspaces and noiseless subsystems.

Explains how dynamical decoupling can mitigate noise effects.

Highlights the importance of these methods for quantum information stability.

Abstract

Quantum information requires protection from the adverse affects of decoherence and noise. This review provides an introduction to the theory of decoherence-free subspaces, noiseless subsystems, and dynamical decoupling. It addresses quantum information preservation as well protected computation.