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Synthetic Gauge Fields and Fractional Chern Insulators with Dipolar Spins

Event Details

Event Dates: 

Friday, December 7, 2012 - 5:00am

Speaker Name(s): 

Norman Yao

Speaker Affiliation(s): 

Harvard University
Seminar Type/Subject

Event Details & Abstract: 

Strongly correlated quantum systems can exhibit exotic behavior that is determined and controlled by topology. Such topological systems are of interest because they constitute fundamentally new states of matter exhibiting fractionalized excitations and robust chiral edge modes. In this talk, I will describe how the nu=1/2 fractional Chern insulator, a recently proposed topological state, arises naturally in a two-dimensional array of driven, dipolar-interacting spins. As a specific implementation, I will discuss the preparation and detection of synthetic gauge potentials and fractional Chern insulating states in a system composed of ultra-cold polar molecules trapped in an optical lattice. Prospects for the realization of such phases in solid-state dipolar systems are discussed as are their possible applications.Joint work with: AV Gorshkov, CR Laumann, A. Lauchli, J. Ye, MD Lukin