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

 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. Note: Order does not necessarily reflect citation order of authors. 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. Access Status: Full text of the requested work is not available in DASH at this time (“dark deposit”). For more information on dark deposits, see our FAQ. Full Text & Related Files: EPL Greiner Controlled.pdf (779.6Kb; PDF) 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 Downloads of this work: