Atomic lattice excitons: From condensates to crystals

A. Kantian; A. J. Daley; P. Törmä; P. Zoller

doi:10.1088/1367-2630/9/11/407

Atomic lattice excitons: From condensates to crystals

A. Kantian^*, A. J. Daley, P. Törmä, P. Zoller

^*Corresponding author for this work

Not published at Aalto University

Research output: Contribution to journal › Article › Scientific › peer-review

11 Citations (Scopus)

Abstract

We discuss atomic lattice excitons (ALEs), bound particle-hole pairs formed by fermionic atoms in two bands of an optical lattice. Such a system provides a clean set-up, with tunable masses and interactions, to study fundamental properties of excitons including exciton condensation. We also find that for a large effective mass ratio between particles and holes, effective long-range interactions can mediate the formation of an exciton crystal, for which superfluidity is suppressed. Using a combination of mean-field treatments, bosonized theory based on a Born-Oppenheimer approximation, and one-dimensional (1D) numerical computation, we discuss the properties of ALEs under varying conditions, and discuss in particular their preparation and measurement.

Original language	English
Article number	407
Pages (from-to)	1-33
Number of pages	33
Journal	New Journal of Physics
Volume	9
DOIs	https://doi.org/10.1088/1367-2630/9/11/407
Publication status	Published - 13 Nov 2007
MoE publication type	A1 Journal article-refereed

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AU - Daley, A. J.

AU - Törmä, P.

AU - Zoller, P.

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