Drop dynamics on chemically patterned surfaces
Europhysics Letters 73 (2006) 740-746
Nonlinear dynamics of a dense two-dimensional dipolar exciton gas
Physical Review B - Condensed Matter and Materials Physics 73:3 (2006)
Abstract:
We use a simple model to describe the nonlinear dynamics of a dense two-dimensional dipolar exciton gas. The model predicts an initial fast expansion due to effective dipole pressure, followed by a much slower diffusion. The model is in very good agreement with recent experimental results. We show that the dipole-pressure-induced expansion strongly constrains the time available for achieving and observing Bose-Einstein quantum statistical effects, indicating a need for spatial exciton traps. We also suggest that nonlinear ballistic exciton transport due to the strong internal dipole pressure is readily achievable. © 2006 The American Physical Society.Switching noise as a probe of statistics in the fractional quantum Hall effect
(2006)
Topological quantum computing with only one mobile quasiparticle.
Phys Rev Lett 96:7 (2006) 070503
Abstract:
In a topological quantum computer, universal quantum computation is performed by dragging quasiparticle excitations of certain two dimensional systems around each other to form braids of their world lines in 2 + 1 dimensional space-time. In this Letter we show that any such quantum computation that can be done by braiding n identical quasiparticles can also be done by moving a single quasiparticle around n - 1 other identical quasiparticles whose positions remain fixed.Thermodynamics of the one-dimensional half-filled Hubbard model in the spin-disordered regime
(2006)