Controlled Preparation and Detection of d-Wave Superfluidity in Two-Dimensional Optical Superlattices

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Controlled Preparation and Detection of d-Wave Superfluidity in Two-Dimensional Optical Superlattices

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Title: Controlled Preparation and Detection of d-Wave Superfluidity in Two-Dimensional Optical Superlattices
Author: Greiner, Markus; Rey, A. M.; Sensarma, R.; Demler, Eugene A.; Lukin, Mikhail D.; Fölling, S.

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Citation: Rey, A. M., R. Sensarma, S. Fölling, Marcus Greiner, Eugene Demler, and Mikhail D. Lukin. 2009. Controlled preparation and detection of d-wave superfluidity in two-dimensional optical superlattices. Europhysics Letters 87(6): 60001.
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Abstract: \(d\)-wave Cooper pairs are believed to be the key for understanding the phenomenon of high-temperature superconductivity in cuprates. These superconductors are an example of the emergence of strong pairing in systems with purely repulsive interactions, similar to superfluid helium 3 and the newly discovered iron oxypnictides. Despite intense studies, there is currently no consensus as to what causes the formation of \(d\)-wave Cooper pairs in these materials. Here we propose a novel experimental scheme in which recently demonstrated methods for realizing optical lattices and superlattices are combined to create and to detect, in a controlled way, ultracold-atom \(d\)-wave Cooper pairs. Our scheme starts from arrays of isolated plaquettes which incorporate the required \(d\)-wave correlations on a short length scale. By tuning the parameters of the potentials, these plaquettes can be coupled to achieve long-range \(d\)-wave superfluid correlations, finally arriving at the generic Hubbard model.
Published Version: doi:10.1209/0295-5075/87/60001
Other Sources: http://arxiv.org/abs/0806.0166
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:7983347
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