%0 Journal Article
%J Physical Review Letters
%D 2012
%T Nanoplasmonic Lattices for Ultracold atoms
%A Michael Gullans
%A T. Tiecke
%A D. E. Chang
%A J. Feist
%A J. D. Thompson
%A J. I. Cirac
%A P. Zoller
%A M. D. Lukin
%X We propose to use sub-wavelength confinement of light associated with the near field of plasmonic systems to create nanoscale optical lattices for ultracold atoms. Our approach combines the unique coherence properties of isolated atoms with the sub-wavelength manipulation and strong light-matter interaction associated with nano-plasmonic systems. It allows one to considerably increase the energy scales in the realization of Hubbard models and to engineer effective long-range interactions in coherent and dissipative many-body dynamics. Realistic imperfections and potential applications are discussed.
%B Physical Review Letters
%V 109
%8 2012/12/6
%G eng
%U http://arxiv.org/abs/1208.6293v3
%N 23
%! Phys. Rev. Lett.
%R 10.1103/PhysRevLett.109.235309
%0 Journal Article
%J Physical Review Letters
%D 2005
%T Solid-state circuit for spin entanglement generation and purification
%A J. M. Taylor
%A W. Dür
%A P. Zoller
%A A. Yacoby
%A C. M. Marcus
%A M. D. Lukin
%X We show how realistic charge manipulation and measurement techniques, combined with the exchange interaction, allow for the robust generation and purification of four-particle spin entangled states in electrically controlled semiconductor quantum dots. The generated states are immunized to the dominant sources of noise via a dynamical decoherence-free subspace; all additional errors are corrected by a purification protocol. This approach may find application in quantum computation, communication, and metrology.
%B Physical Review Letters
%V 94
%8 2005/6/15
%G eng
%U http://arxiv.org/abs/cond-mat/0503255v2
%N 23
%! Phys. Rev. Lett.
%R 10.1103/PhysRevLett.94.236803
%0 Journal Article
%D 2004
%T Quantum information processing using localized ensembles of nuclear spins
%A J. M. Taylor
%A G. Giedke
%A H. Christ
%A B. Paredes
%A J. I. Cirac
%A P. Zoller
%A M. D. Lukin
%A A. Imamoglu
%X We describe a technique for quantum information processing based on localized en sembles of nuclear spins. A qubit is identified as the presence or absence of a collective excitation of a mesoscopic ensemble of nuclear spins surrounding a single quantum dot. All single and two-qubit operations can be effected using hyperfine interactions and single-electron spin rotations, hence the proposed scheme avoids gate errors arising from entanglement between spin and orbital degrees of freedom. Ultra-long coherence times of nuclear spins suggest that this scheme could be particularly well suited for applications where long lived memory is essential.
%8 2004/07/23
%G eng
%U http://arxiv.org/abs/cond-mat/0407640v2