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Observation of Correlated Particle-Hole Pairs and String Order in Low-Dimensional Mott Insulators
- Source :
- Science 334, 200 (2011)
- Publication Year :
- 2011
-
Abstract
- Quantum phases of matter are characterized by the underlying correlations of the many-body system. Although this is typically captured by a local order parameter, it has been shown that a broad class of many-body systems possesses a hidden non-local order. In the case of bosonic Mott insulators, the ground state properties are governed by quantum fluctuations in the form of correlated particle-hole pairs that lead to the emergence of a non-local string order in one dimension. Using high-resolution imaging of low-dimensional quantum gases in an optical lattice, we directly detect these pairs with single-site and single-particle sensitivity and observe string order in the one-dimensional case.<br />Comment: 9 pages, 7 figures
- Subjects :
- Condensed Matter - Quantum Gases
Quantum Physics
Subjects
Details
- Database :
- arXiv
- Journal :
- Science 334, 200 (2011)
- Publication Type :
- Report
- Accession number :
- edsarx.1108.3317
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1126/science.1209284