title: Dissipative Quantum Control of a Spin Chain.
abstract: A protocol is discussed for preparing a spin chain in a generic many-body state in the asymptotic limit of tailored nonunitary dynamics. The dynamics require the spectral resolution of the target state, optimized coherent pulses, engineered dissipation, and feedback. As an example, we discuss the preparation of an entangled antiferromagnetic state, and argue that the procedure can be applied to chains of trapped ions or Rydberg atoms.
authors.affiliation: Theoretische Physik, Universität des Saarlandes, D-66123 Saarbrücken, Germany.
authors.forename: Giovanna
authors.initials: G
authors.lastname: Morigi
authors.affiliation: Experimentalphysik, Universität des Saarlandes, D-66123 Saarbrücken, Germany.
authors.forename: Jürgen
authors.initials: J
authors.lastname: Eschner
authors.affiliation: IFEG, CONICET and Universidad Nacional de Córdoba, Ciudad Universitaria, X5016LAE Córdoba, Argentina.
authors.forename: Cecilia
authors.initials: C
authors.lastname: Cormick
authors.affiliation: National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA.
authors.forename: Yiheng
authors.initials: Y
authors.lastname: Lin
authors.affiliation: National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA.
authors.forename: Dietrich
authors.initials: D
authors.lastname: Leibfried
authors.affiliation: National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA.
authors.forename: David J
authors.initials: DJ
authors.lastname: Wineland