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Related Experiment Video

Updated: May 18, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs
06:42

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Constraints on measurement-based quantum computation in effective cluster states.

Daniel Klagges1, Kai Phillip Schmidt

  • 1Lehrstuhl für Theoretische Physik I, Otto-Hahn-Straße 4, TU Dortmund, D-44221 Dortmund, Germany. klagges@fkt.physik.tu-dortmund.de

Physical Review Letters
|September 26, 2012
PubMed
Summary

Effective cluster states in one-way quantum computers are fragile. External perturbations can disrupt these states, impacting the performance of quantum computations, especially those with strong interactions.

Related Experiment Videos

Last Updated: May 18, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs
06:42

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Area of Science:

  • Quantum Computing
  • Condensed Matter Physics
  • Quantum Information Science

Background:

  • One-way quantum computation utilizes cluster states for information processing.
  • Effective low-energy models are crucial for understanding complex quantum systems.
  • The stability of quantum states under perturbations is a key challenge in quantum computing.

Purpose of the Study:

  • To investigate the physical properties of one-way quantum computers within effective low-energy cluster states.
  • To determine optimal operating conditions by analyzing temperature and system parameter dependencies.
  • To identify the vulnerabilities of these cluster states to external perturbations.

Main Methods:

  • Calculation of optimal working conditions based on temperature and system parameters.
  • Analysis of the stability of effective cluster states under various external perturbations.
  • Theoretical modeling of low-energy models with strong multisite interactions.

Main Results:

  • Effective cluster states, when implemented perturbatively, exhibit fragility.
  • Specific types of external perturbations were identified as particularly disruptive.
  • Optimal working conditions were characterized as a function of temperature and system parameters.

Conclusions:

  • The fragility of effective cluster states poses a significant challenge for practical one-way quantum computing.
  • Understanding and mitigating these perturbations are crucial for robust quantum computation.
  • The findings have implications for the design and implementation of quantum algorithms involving strong interactions.