Affordable Access

Access to the full text

Dissipative ground-state preparation of a spin chain by a structured environment

  • Cormick, Cecilia
  • Bermudez, Alejandro
  • Huelga, Susana F.
  • Plenio, Martin B.
Published Article
Publication Date
Jul 16, 2013
Submission Date
Apr 08, 2013
DOI: 10.1088/1367-2630/15/7/073027
External links


We propose a dissipative method to prepare the ground state of the isotropic XY spin Hamiltonian in a transverse field. Our model consists of a spin chain with nearest-neighbour interactions and an additional collective coupling of the spins to a damped harmonic oscillator. The latter provides an effective environment with a Lorentzian spectral density and can be used to drive the chain asymptotically towards its multipartite-entangled ground state at a rate that depends on the degree of non-Markovianity of the evolution. We also present a detailed proposal for the experimental implementation with a chain of trapped ions. The protocol does not require individual addressing, concatenated pulses, or multi-particle jump operators, and is capable of generating the desired target state in small ion chains with very high fidelities.

Report this publication


Seen <100 times