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Novel schemes for measurement-based quantum computation.

D Gross1, J Eisert

  • 1Blackett Laboratory, Imperial College London, Prince Consort Road, London SW7 2BW, United Kingdom.

Physical Review Letters
|August 7, 2007
PubMed
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Researchers developed a new framework for quantum computation using novel resource states from many-body physics. This advances beyond cluster-state models, enabling more versatile quantum computing schemes.

Area of Science:

  • Quantum Information Science
  • Condensed Matter Physics
  • Computational Physics

Background:

  • Measurement-based quantum computation (MBQC) typically relies on cluster states as a universal resource.
  • Existing MBQC models face limitations in resource state preparation and correlation properties.

Purpose of the Study:

  • To establish a novel framework for constructing measurement-based quantum computation schemes.
  • To explore resource states beyond the standard cluster state for enhanced quantum computation.

Main Methods:

  • Utilizing tools from many-body physics, specifically finitely correlated states and projected entangled pair states.
  • Developing computational models that differ from the standard one-way quantum computer.

Main Results:

Related Experiment Videos

  • Identified novel resource states with non-vanishing correlations and distinct local entanglement properties.
  • Demonstrated that these states can be prepared using non-maximally entangling gates.
  • Showcased resource states that are locally arbitrarily close to a pure state.
  • Introduced alternative methods for randomness compensation in computational models.

Conclusions:

  • The developed framework enables the construction of diverse and potentially more efficient quantum computation schemes.
  • The identified resource states offer a departure from cluster states, expanding the toolkit for MBQC.
  • The findings suggest the possibility of tailoring quantum computational models to specific physical systems.