Kutztown University Department of Physics

Kutztown University of Pennsylvania

CONTACT
Dept of Physical Sciences
420 Boehm Hall
Kutztown University
Kutztown,  PA 19530

Phone: (610)-683-4441
Email: das@kutztown.edu

Lattice Coherent Adiabatic Passage

  • This material is based upon work supported by
  • the National Science Foundation under Grant Number

    0970012

    0970012

    0970012

  • The following links contain movies that show the complete time-evolution of our simulation of Lattice Coherent Transfer Adiabatic Passage( LCTAP), of which snapshots have been presented in our paper Miroslav Gajdacz, Tomáš Opatrný and Kunal K. Das, Transparent, Non-local, Species-selective Transport in an Optical Superlattice Containing Two Interacting Atom Species, Phys. Rev. A 83, 033623 (2011).

    Single Species LCTAP: "Time Evolution with a single species in a triple-well lattice, shown here for three adjacent unit cells and for two cycles. Figures 1 and 2 in the paper correspond to this." PC or MAC

    Dual Species LCTAP with species B present with VB/VA=20: "Time Evolution with two species (A initially in left well and B in the middle well) shown for a single unit cell for one cycle. The ratio of the potentials seen by B and A are VB/VA =20. The snapshots in Figure 2 in the paper corresponds to this. Also the evolution of the population density in Fig. 4(a) of the paper corresponds to this." PC or MAC

    Dual Species LCTAP with species B absent: "Time Evolution optimized for the presence of two species as in the previous movie; however species B atom is missing. The lattice evolves exactly the same way as in the previous movie. The evolution of the population density in Fig. 4(b) corresponds to this, and is very similar to that in Fig. 4(a) where the atom B is present. This shows that the transfer of atom A can be achieved without knowledge of the presence or absence of atom B." PC or MAC

    Dual Species LCTAP with species B present with VB/VA=6: "Time Evolution with two  species (A initially in left well and B in the middle well) shown for a single unit cell for one cycle. The ratio of the potentials seen by B and A are VB/VA =6. This is not included in the paper although mentioned at the end. It shows that even a lower ratio of potential VB/VA =6 is sufficient to keep the atom B in place and still accomplish CTAP with atom A without significant overlap of the two atoms at any time." PC or MAC

    Thank you very much for your interest.  If you have any questions, please write to Kunal K. Das at the email address: das@kutztown.edu