Coherent control of population transfer between communicating defects

Details Coherent control of population transfer between communicating defects Coherent control of population transfer between communicating defects

2006-01-03

arxiv.org/abs/cond-mat/0601044v1

Phys. Rev. B 73, 054301 (2006)

Physics

Condensed Matter

Other Condensed Matter

7 pages, 6 figures, to appear in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.73.054301

Population transfer between two identical, communicating defects in a one-dimensional tight-binding lattice can be systematically controlled by external time-periodic forcing. Employing a force with slowly changing amplitude, the time it takes to transfer a particle from one defect to the other can be altered over several orders of magnitude. An analytical expression is derived which shows how the forcing effectively changes the energy splitting between the defect states, and numerical model calculations illustrate the possibility of coherent control of the transfer.

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