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Double Quantum Dots in Carbon Nanotubes
(American Physical Society, 2010)
We study the two-electron eigenspectrum of a carbon-nanotube double quantum dot with spin-orbit coupling. Exact calculations are combined with a simple model to provide an intuitive and accurate description of single-particle ...
Robust Optical Delay Lines with Topological Protection
(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 ...
Photonic Quantum Transport in a Nonlinear Optical Fiber
(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
(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 ...
Characterization of Topological States on a Lattice with Chern Number
(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 ...
Enhanced Antiferromagnetic Exchange between Magnetic Impurities in a Superconducting Host
(American Physical Society (APS), 2014)
It is generally believed that superconductivity only weakly affects the indirect exchange between
magnetic impurities. If the distance r between impurities is smaller than than the superconducting
coherence length \((r ...
Quantum Many-Body Dynamics of Coupled Double-Well Superlattices
(American Physical Society, 2008)
We propose a method for controllable generation of non-local entangled pairs using spinor atoms loaded in an optical superlattice. Our scheme iteratively increases the distance between entangled atoms by controlling the ...
Majorana Fermions in Equilibrium and Driven Cold Atom Quantum Wires
(American Physical Society, 2011)
We introduce a new approach to create and detect Majorana fermions using optically trapped 1D fermionic atoms. In our proposed setup, two internal states of the atoms couple via an optical Raman transition--simultaneously ...
Tunable Superfluidity and Quantum Magnetism with Ultracold Polar Molecules
(American Physical Society, 2011)
By selecting two dressed rotational states of ultracold polar molecules in an optical lattice, we obtain a highly tunable generalization of the \(t-J\) model, which we refer to as the \(t-J-V-W\) model. In addition to XXZ ...
Quantum Spin Dynamics of Mode-Squeezed Luttinger Liquids in Two-Component Atomic Gases
(American Physical Society, 2008)
We report on the observation of the phase dynamics of interacting one-dimensional ultracold bosonic gases with two internal degrees of freedom. By controlling the non-linear atomic interactions close to a Feshbach resonance ...