Control of bound-pair transport by periodic driving

K. Kudo, T. Boness, T. S. Monteiro

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

We investigate the effect of periodic driving by an external field on systems with attractive pairing interactions. These include spin systems (such as the ferromagnetic XXZ model) as well as ultracold fermionic atoms described by the attractive Hubbard model. We show that a well-known phenomenon seen in periodically driven systems-the renormalization of the exchange coupling strength-acts selectively on bound pairs of spins (atoms), relative to magnon (bare atom) states. Thus one can control the direction and speed of transport of bound pair relative to magnon (unpaired) atom states, and thus coherently achieve spatial separation of these components. Applications to recent experiments on transport with fermionic atoms in optical lattices which consist of mixtures of bound pairs and bare atoms are discussed.

Original languageEnglish
Article number063409
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume80
Issue number6
DOIs
Publication statusPublished - 2009 Dec 4
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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