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Related Concept Videos

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Related Experiment Videos

Quantum computational renormalization in the Haldane phase.

Stephen D Bartlett1, Gavin K Brennen, Akimasa Miyake

  • 1School of Physics, The University of Sydney, Sydney, NSW 2006, Australia.

Physical Review Letters
|September 28, 2010
PubMed
Summary
This summary is machine-generated.

Single-spin measurements on interacting spin lattices enable quantum computation by mimicking renormalization group transformations. This enhances computational fidelity and reveals quantum computational ability as a robust property of quantum phases.

Related Experiment Videos

Area of Science:

  • Quantum Information Science
  • Condensed Matter Physics
  • Quantum Computation

Background:

  • Quantum computation utilizes quantum systems for complex calculations.
  • Spin lattices are potential platforms for quantum computation.
  • State variations can reduce quantum computation fidelity.

Purpose of the Study:

  • To demonstrate how single-spin measurements on spin lattices can perform quantum computation.
  • To show these measurements mimic renormalization group transformations.
  • To investigate the robustness of quantum computational ability in quantum phases.

Main Methods:

  • Utilizing single-spin measurements on the ground state of interacting spin lattices.
  • Employing renormalization group transformations to remove short-ranged variations.
  • Analyzing the ground state of a rotationally invariant spin-1 chain.

Main Results:

  • Single-spin measurements effectively mimic renormalization group transformations.
  • These measurements remove state variations, enhancing computational fidelity.
  • Quantum computational ability is shown to be a robust property of quantum phases.

Conclusions:

  • Single-spin measurements offer a viable method for quantum computation on spin lattices.
  • The Haldane phase and Affleck-Kennedy-Lieb-Tasaki point of spin-1 chains can serve as quantum computational wires.