2015/01/31 by Florentin Reiter, David Reeb, Anders S. Sørensen · 2 citations
Physics and Astronomy · #quant-ph
paper · pdf · doi:10.1103/physrevlett.117.040501
published as Phys. Rev. Lett. 117, 040501 (2016) · 5 + 27 pages, 3 + 1 figures. Close to published version. The scheme for W state preparation from version 1 was removed during the peer-review process and will be published elsewhere
arxiv created 2016/09/09 · arxiv updated 2016/09/13
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.