# Dynamical Decoupling of Open Quantum Systems

**Authors:** Lorenza Viola, Emanuel Knill, Seth Lloyd  
**arXiv:** [quant-ph/9809071](https://arxiv.org/abs/quant-ph/9809071)  
**Date:** 1998-09-24  
**Summary page:** https://www.summarizepaper.com/en/arxiv-id/quant-ph--9809071v2/

## Key points

- Paper title: "Dynamical Decoupling of Open Quantum Systems"
- Authors: Lorenza Viola, Emanuel Knill, and Seth Lloyd
- Proposal of a novel method for overcoming the effects of decoherence and dissipation in open quantum systems
- Demonstration that it is possible to filter out unwanted system-environment interactions using a noise-suppression procedure, even if they are not fully understood
- Approach allows for greater control over the effective dynamical evolution of the open quantum system
- Implications for quantum information processing and potential improvements in stability and reliability of quantum computing systems
- Innovative solution to a longstanding challenge in quantum physics
- Promising avenue for future research in this field

## Summary

In their paper "Dynamical Decoupling of Open Quantum Systems," Lorenza Viola, Emanuel Knill, and Seth Lloyd propose a novel method for overcoming the effects of decoherence and dissipation in open quantum systems. They demonstrate that it is possible to filter out unwanted system-environment interactions using a noise-suppression procedure, even if they are not fully understood. This approach allows for greater control over the effective dynamical evolution of the open quantum system and has implications for quantum information processing. The authors highlight how this method could improve the stability and reliability of quantum computing systems. Overall, this paper presents an innovative solution to a longstanding challenge in quantum physics and provides a promising avenue for future research in this field.