title: Scalable Dissipative Preparation of Many-Body Entanglement.
abstract: We present a technique for the dissipative preparation of highly entangled multiparticle states of atoms coupled to common oscillator modes. By combining local spontaneous emission with coherent couplings, we engineer many-body dissipation that drives the system from an arbitrary initial state into a Greenberger-Horne-Zeilinger state. We demonstrate that using our technique highly entangled steady states can be prepared efficiently in a time that scales polynomially with the system size. Our protocol assumes generic couplings and will thus enable the dissipative production of multiparticle entanglement in a wide range of physical systems. As an example, we demonstrate the feasibility of our scheme in state-of-the-art trapped-ion systems.
authors: Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, DK-2100 Copenhagen, Denmark.
authors: Florentin
authors: F
authors: Reiter
authors: Institute for Theoretical Physics, Leibniz Universität Hannover, Appelstrasse 2, 30167 Hannover, Germany.
authors: David
authors: D
authors: Reeb
authors: Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, DK-2100 Copenhagen, Denmark.
authors: Anders S
authors: AS
authors: Sørensen