Condensed Matter Theory

Stephan Arlinghaus Controlled wave-packet manipulation with driven optical lattices

Author(s): Stephan Arlinghaus, Martin Holthaus

Controlled wave-packet manipulation with driven optical lattices

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Article: Phys. Rev. A 84, 063617 (2011), American Physical Society

Keywords: optical lattices, ultracold atoms, coherent control

PACS: 67.85.Hj, 42.50.Hz, 32.80.Qk, 03.75.Lm

Motivated by recent experimental progress achieved with ultracold atoms in kilohertz-driven optical lattices, we provide a theoretical discussion of mechanisms governing the response of a particle in a cosine lattice potential to strong forcing pulses with smooth envelope. Such pulses effectuate adiabatic motion of a wave packet's momentum distribution on quasienergy surfaces created by spatiotemporal Bloch waves. Deviations from adiabaticity can then be deliberately exploited for exerting coherent control and for reaching target states which may not be accessible by other means. As one particular example, we consider an analog of the π pulses known from optical resonance. We also suggest adapting further techniques previously developed for controlling atomic and molecular dynamics by laser pulses to the coherent control of matter waves in shaken optical lattices.


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