Journal
PHYSICAL REVIEW LETTERS
Volume 101, Issue 24, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.101.246810
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Funding
- SKPBR [2006CB921800, 2004CB619004, 2007CB925104, 2007CB925204, 2009CB929504]
- RGC of Hong Kong [HKU7045/05P, HKU7049/07P, HKU7044/08P]
- NSFC [10429401, 10674049, 10874066]
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We design an ingenious scheme to realize Haldane's quantum Hall model without Landau levels by using ultracold atoms trapped in an optical lattice. Three standing-wave laser beams are used to construct a wanted honeycomb lattice, where different on site energies in two sublattices required in the model can be implemented through tuning the phase of one laser beam. The staggered magnetic field is generated from the light-induced Berry phase. Moreover, we establish a relation between the Hall conductivity and the atomic density, enabling us to detect the Chern number with the typical density-profile-measurement technique.
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