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Related Experiment Videos

Coherent quantum evolution via reservoir driven holonomies.

Angelo Carollo1, Marcelo França Santos, Vlatko Vedral

  • 1DAMTP, University of Cambridge, Wilberforce Road, Cambridge CB3 0WA, United Kingdom.

Physical Review Letters
|February 21, 2006
PubMed
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In a strongly interacting environment, systems in a decoherence-free subspace (DFS) evolve coherently. Cyclic evolution of the environment imparts a geometric phase, known as holonomy, to these DFS states.

Area of Science:

  • Quantum mechanics
  • Quantum information science
  • Condensed matter physics

Background:

  • Decoherence-free subspaces (DFS) protect quantum information from environmental noise.
  • Understanding coherent evolution in interacting systems is crucial for quantum technologies.

Purpose of the Study:

  • To investigate the dynamics of a quantum system within a DFS coupled to a strongly interacting environment.
  • To explore the impact of environmental evolution on the DFS states.

Main Methods:

  • Theoretical analysis of a quantum system in a DFS.
  • Adopting the limit of a strongly interacting environment.
  • Considering cyclic evolution of the environment.

Main Results:

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  • The system coherently evolves, adiabatically tracking changes in the DFS.
  • DFS states acquire a holonomy under cyclic environmental evolution.

Conclusions:

  • Coherent dynamics are preserved in DFS even within strongly interacting environments.
  • Holonomy emerges as a key feature of DFS states under cyclic environmental evolution, with potential applications in quantum sensing and computation.