Observation of correlated particle-hole pairs and string order in low-dimensional mott insulators

M. Endres, M. Cheneau, T. Fukuhara, C. Weitenberg, Peter Schauß, C. Gross, L. Mazza, M.C. Bañuls, L. Pollet, I. Bloch, Stefan Kuhr

Research output: Contribution to journalLetter

179 Citations (Scopus)

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 nonlocal 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 nonlocal string order in one dimension. By 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.
Original languageEnglish
Pages (from-to)200-203
Number of pages4
JournalScience
Volume334
Issue number6053
DOIs
Publication statusPublished - 14 Oct 2011

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strings
insulators
ground state
sensitivity
high resolution
gases

Keywords

  • quantum phases
  • particle-hole pairs
  • string order

Cite this

Endres, M., Cheneau, M., Fukuhara, T., Weitenberg, C., Schauß, P., Gross, C., ... Kuhr, S. (2011). Observation of correlated particle-hole pairs and string order in low-dimensional mott insulators. Science, 334(6053), 200-203. https://doi.org/10.1126/science.1209284
Endres, M. ; Cheneau, M. ; Fukuhara, T. ; Weitenberg, C. ; Schauß, Peter ; Gross, C. ; Mazza, L. ; Bañuls, M.C. ; Pollet, L. ; Bloch, I. ; Kuhr, Stefan. / Observation of correlated particle-hole pairs and string order in low-dimensional mott insulators. In: Science. 2011 ; Vol. 334, No. 6053. pp. 200-203.
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Endres, M, Cheneau, M, Fukuhara, T, Weitenberg, C, Schauß, P, Gross, C, Mazza, L, Bañuls, MC, Pollet, L, Bloch, I & Kuhr, S 2011, 'Observation of correlated particle-hole pairs and string order in low-dimensional mott insulators', Science, vol. 334, no. 6053, pp. 200-203. https://doi.org/10.1126/science.1209284

Observation of correlated particle-hole pairs and string order in low-dimensional mott insulators. / Endres, M.; Cheneau, M.; Fukuhara, T.; Weitenberg, C.; Schauß, Peter; Gross, C.; Mazza, L.; Bañuls, M.C.; Pollet, L.; Bloch, I.; Kuhr, Stefan.

In: Science, Vol. 334, No. 6053, 14.10.2011, p. 200-203.

Research output: Contribution to journalLetter

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T1 - Observation of correlated particle-hole pairs and string order in low-dimensional mott insulators

AU - Endres, M.

AU - Cheneau, M.

AU - Fukuhara, T.

AU - Weitenberg, C.

AU - Schauß, Peter

AU - Gross, C.

AU - Mazza, L.

AU - Bañuls, M.C.

AU - Pollet, L.

AU - Bloch, I.

AU - Kuhr, Stefan

PY - 2011/10/14

Y1 - 2011/10/14

N2 - 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 nonlocal 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 nonlocal string order in one dimension. By 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.

AB - 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 nonlocal 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 nonlocal string order in one dimension. By 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.

KW - quantum phases

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U2 - 10.1126/science.1209284

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M3 - Letter

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Endres M, Cheneau M, Fukuhara T, Weitenberg C, Schauß P, Gross C et al. Observation of correlated particle-hole pairs and string order in low-dimensional mott insulators. Science. 2011 Oct 14;334(6053):200-203. https://doi.org/10.1126/science.1209284