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Title: | Designing Frustrated Quantum Magnets with Laser-Dressed Rydberg Atoms |
Authors: | Glaetzle, Alexander W. Dalmonte, Marcello NATH, REJISH Gross, Christian Bloch, Immanuel Zoller, P. Dept. of Physics |
Keywords: | Frustrated Quantum Magnets Laser-Dressed Rydberg Atoms Magnetic trap arrays Emergent gauge theories Spin interactions 2015 |
Issue Date: | Apr-2015 |
Publisher: | American Physical Society |
Citation: | Physical Review Letters, 114(17), 173002. |
Abstract: | We show how a broad class of lattice spin- 1 / 2 models with angular- and distance-dependent couplings can be realized with cold alkali atoms stored in optical or magnetic trap arrays. The effective spin- 1 / 2 is represented by a pair of atomic ground states, and spin-spin interactions are obtained by admixing van der Waals interactions between fine-structure split Rydberg states with laser light. The strengths of the diagonal spin interactions as well as the “flip-flop,” and “flip-flip” and “flop-flop” interactions can be tuned by exploiting quantum interference, thus realizing different spin symmetries. The resulting energy scales of interactions compare well with typical temperatures and decoherence time scales, making the exploration of exotic forms of quantum magnetism, including emergent gauge theories and compass models, accessible within state-of-the-art experiments. |
URI: | http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/2249 https://doi.org/10.1103/PhysRevLett.114.173002 |
ISSN: | 0031-9007 1079-7114 |
Appears in Collections: | JOURNAL ARTICLES |
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