Quantum optics of chiral spin networks

Hannes Pichler, Tomás Ramos, Andrew J. Daley, Peter Zoller

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We study the driven-dissipative dynamics of a network of spin-1/2 systems coupled to one or more chiral 1D bosonic waveguides within the framework of a Markovian master equation. We determine how the interplay between a coherent drive and collective decay processes can lead to the formation of pure multipartite entangled steady states. The key ingredient for the emergence of these many-body dark states is an asymmetric coupling of the spins to left and right propagating guided modes. Such systems are motivated by experimental possibilities with internal states of atoms coupled to optical fibers, or motional states of trapped atoms coupled to a spin-orbit coupled Bose-Einstein condensate. We discuss the characterization of the emerging multipartite entanglement in this system in terms of the Fisher information.

Original languageEnglish
Article number042116
JournalPhysical Review A
Issue number4
Publication statusPublished - 14 Apr 2015


  • Bose-Einstein condensation
  • Fisher information matrix
  • optical fibers
  • quantum optics
  • spin dynamics
  • spinning (fibers)
  • statistical mechanics
  • asymmetric coupling
  • Bose-Einstein condensates
  • dissipative dynamics
  • internal state
  • Markovian master equation
  • multipartite entanglements
  • spin networks


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