Browsing by Author "Hafezi, Mohammad"

Now showing items 1-6 of 6

    • Anyonic Interferometry and Protected Memories in Atomic Spin Lattices 

      Jiang, Liang; Brennen, Gavin; Gorshkov, Alexey Vyacheslavovich; Hammerer, Klemens; Hafezi, Mohammad; Demler, Eugene A.; Luki, Mikhail; Zoller, Peter (Nature Publishing Group, 2008)
      Strongly correlated quantum systems can exhibit exotic behavior called topological order which is characterized by non-local correlations that depend on the system topology. Such systems can exhibit remarkable phenomena ...

    • Characterization of Topological States on a Lattice with Chern Number 

      Hafezi, Mohammad; Sørensen, Anders; Lukin, Mikhail D.; Demler, Eugene A. (Institute of Physics, 2008)
      We study Chern numbers to characterize the ground state of strongly interacting systems on a lattice. This method allows us to perform a numerical characterization of bosonic fractional quantum Hall (FQH) states on a lattice ...

    • Efficient All-Optical Switching Using Slow Light within a Hollow Fiber 

      Bajcsy, M; Hofferberth, Sebastian; Balic, V; Peyronel, T; Hafezi, Mohammad; Zibrov, Alexander S; Vuletic, V; Lukin, Mikhail D. (American Physical Society, 2009)
      We demonstrate a fiber-optical switch that is activated at tiny energies corresponding to a few hundred optical photons per pulse. This is achieved by simultaneously confining both photons and a small lasercooled ensemble ...

    • Photonic Quantum Transport in a Nonlinear Optical Fiber 

      Hafezi, Mohammad; Chang, Darrick E.; Gritsev, Vladimir; Demler, Eugene A.; Lukin, Mikhail D. (Institute of Physics, 2011)
      We theoretically study the transmission of few-photon quantum fields through a strongly nonlinear optical medium. We develop a general approach to investigate nonequilibrium quantum transport of bosonic fields through a ...

    • Quantum Transport of Strongly Interacting Photons in a One-Dimensional Nonlinear Waveguide 

      Hafezi, Mohammad; Chang, Darrick E.; Gritsev, Vladimir; Demler, Eugene A.; Lukin, Mikhail D. (American Physical Review, 2012)
      We present a theoretical technique for solving the quantum transport problem of a few photons through a one-dimensional, strongly nonlinear waveguide. We specifically consider the situation where the evolution of the optical ...

    • Robust Optical Delay Lines with Topological Protection 

      Hafezi, Mohammad; Demler, Eugene A.; Lukin, Mikhail D.; Taylor, Jacob Mason (Nature Publishing Group, 2011)
      Phenomena associated with the topological properties of physical systems can be naturally robust against perturbations. This robustness is exemplified by quantized conductance and edge state transport in the quantum Hall ...