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Updated: Aug 8, 2025

Optimizing Sample Preparation for Cryogenic Electron Microscopy
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Kagome qubit ice.

Alejandro Lopez-Bezanilla1, Jack Raymond2, Kelly Boothby2

  • 1Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA.

Nature Communications
|February 27, 2023
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Summary
This summary is machine-generated.

Researchers realized kagome spin ice in superconducting qubits, demonstrating a field-induced crossover between topological spin liquid phases. This work advances the study of fractionalized excitations in quantum systems.

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Area of Science:

  • Condensed Matter Physics
  • Quantum Computing

Background:

  • Topological spin liquids with disorder exhibit fractionalized excitations.
  • Observing distinct kinetic regimes in these phases experimentally is challenging.

Purpose of the Study:

  • To realize and study topological spin liquid phases in an artificial spin ice system.
  • To demonstrate a field-induced kinetic crossover between distinct spin liquid phases.

Main Methods:

  • Utilized superconducting qubits in a quantum annealer to create a kagome spin ice realization.
  • Employed fine control over local magnetic fields to induce phase transitions.
  • Characterized the Ice-I and a novel field-induced Ice-II phase.

Main Results:

  • Successfully realized kagome spin ice in a quantum annealer.
  • Demonstrated a field-induced kinetic crossover between spin-liquid phases.
  • Observed evidence of the Ice-I phase and a novel charge-ordered, spin-disordered topological Ice-II phase.

Conclusions:

  • The quantum-driven kinetics in this system provides a new platform for studying topological phases.
  • This work highlights the potential of quantum annealers for exploring complex condensed matter phenomena.