2019
S. Lepoutre, J. Schachenmayer, L. Gabardos, B. Zhu, B. Naylor, E. Marechal, O. Gorceix, A. M. Rey, L Vernac, B Laburthe-Tolra
Exploring out-of-equilibrium quantum magnetism and thermalization in a spin-3 many-body dipolar lattice system Journal Article
In: Nature Communications, 10 (1714), 2019.
Links | BibTeX | Tags: Condensed Matter - Quantum Gases, DTWA, GDTWA, magnetic atoms, Optical lattices, Truncated Wigner Approximation
@article{2018arXiv180302628L,
title = {Exploring out-of-equilibrium quantum magnetism and thermalization in a spin-3 many-body dipolar lattice system},
author = {S. {Lepoutre} and J. {Schachenmayer} and L. {Gabardos} and B. {Zhu} and B. {Naylor} and E. {Marechal} and O. {Gorceix} and A. M. {Rey} and L {Vernac} and B {Laburthe-Tolra}},
url = {https://www.nature.com/articles/s41467-019-09699-5},
doi = { 10.1038/s41467-019-09699-5},
year = {2019},
date = {2019-04-12},
journal = {Nature Communications},
volume = {10},
number = {1714},
keywords = {Condensed Matter - Quantum Gases, DTWA, GDTWA, magnetic atoms, Optical lattices, Truncated Wigner Approximation},
pubstate = {published},
tppubtype = {article}
}
Jaromir Panas, Mathieu Barbier, Andreas Geißler, Walter Hofstetter
Supersolid Phases of Rydberg-Excited Bosons on a Triangular Lattice Journal Article
In: arXiv:1903.01912 [cond-mat], 2019.
Abstract | BibTeX | Tags: Condensed Matter - Quantum Gases
@article{Panas2019,
title = {Supersolid Phases of Rydberg-Excited Bosons on a Triangular Lattice},
author = {Jaromir Panas and Mathieu Barbier and Andreas Geißler and Walter Hofstetter},
year = {2019},
date = {2019-01-01},
journal = {arXiv:1903.01912 [cond-mat]},
abstract = {Recent experiments with ultracold Rydberg-excited atoms have shown that long-range interactions can give rise to spatially ordered structures. Observation of crystalline phases in a system with Rydberg atoms loaded into an optical lattice seems also within reach. Here we investigate a bosonic model on a triangular lattice suitable for description of such experiments. Numerical simulations based on bosonic dynamical mean-field theory reveal a rich phase diagram with different supersolid phases. Comparison with the results obtained for a square lattice geometry shows qualitatively similar results in a wide range of parameters, however, on a triangular lattice we do not observe the checkerboard supersolid. Moreover, unlike on a square lattice we did not find a phase transition from uniform superfluid to supersolid induced by increase of the hopping amplitude on a triangular lattice. Based on our results we propose an intuitive interpretation of the nature of different supersolid phases. We also propose parameters for the experimental realization.},
keywords = {Condensed Matter - Quantum Gases},
pubstate = {published},
tppubtype = {article}
}
Recent experiments with ultracold Rydberg-excited atoms have shown that long-range interactions can give rise to spatially ordered structures. Observation of crystalline phases in a system with Rydberg atoms loaded into an optical lattice seems also within reach. Here we investigate a bosonic model on a triangular lattice suitable for description of such experiments. Numerical simulations based on bosonic dynamical mean-field theory reveal a rich phase diagram with different supersolid phases. Comparison with the results obtained for a square lattice geometry shows qualitatively similar results in a wide range of parameters, however, on a triangular lattice we do not observe the checkerboard supersolid. Moreover, unlike on a square lattice we did not find a phase transition from uniform superfluid to supersolid induced by increase of the hopping amplitude on a triangular lattice. Based on our results we propose an intuitive interpretation of the nature of different supersolid phases. We also propose parameters for the experimental realization.2016
Tao Ying, Marcello Dalmonte, Adriano Angelone, Fabio Mezzacapo, Peter Zoller, Guido Pupillo
Cluster Bose Metals Journal Article
In: arXiv:1606.04267 [cond-mat], 2016.
Abstract | BibTeX | Tags: Condensed Matter - Quantum Gases, Condensed Matter - Strongly Correlated Electrons
@article{Ying2016,
title = {Cluster Bose Metals},
author = {Tao Ying and Marcello Dalmonte and Adriano Angelone and Fabio Mezzacapo and Peter Zoller and Guido Pupillo},
year = {2016},
date = {2016-01-01},
journal = {arXiv:1606.04267 [cond-mat]},
abstract = {Quantum phases of matter are usually characterised by broken symmetries. Identifying physical mechanisms and microscopic Hamiltonians that elude this paradigm is one of the key present challenges in many-body physics. Here, we use quantum Monte-Carlo simulations to show that a Bose metal phase, breaking no symmetries, is realized in simple Hubbard models for bosonic particles on a square lattice complemented by soft-shoulder interactions. The Bose metal appears at strong coupling and is separated from a supersolid phase and a superfluid at weaker couplings. The enabling mechanism is provided by cluster formation in the corresponding classical tiling problem. The identification of the cluster mechanism paves the way to the realization of exotic quantum liquids in both natural and synthetic quantum matter that harbors cluster formation.},
keywords = {Condensed Matter - Quantum Gases, Condensed Matter - Strongly Correlated Electrons},
pubstate = {published},
tppubtype = {article}
}
Quantum phases of matter are usually characterised by broken symmetries. Identifying physical mechanisms and microscopic Hamiltonians that elude this paradigm is one of the key present challenges in many-body physics. Here, we use quantum Monte-Carlo simulations to show that a Bose metal phase, breaking no symmetries, is realized in simple Hubbard models for bosonic particles on a square lattice complemented by soft-shoulder interactions. The Bose metal appears at strong coupling and is separated from a supersolid phase and a superfluid at weaker couplings. The enabling mechanism is provided by cluster formation in the corresponding classical tiling problem. The identification of the cluster mechanism paves the way to the realization of exotic quantum liquids in both natural and synthetic quantum matter that harbors cluster formation.2012
M A Baranov, M Dalmonte, G Pupillo, P Zoller
Condensed Matter Theory of Dipolar Quantum Gases Journal Article
In: Chemical Reviews, 112 (9), pp. 5012-5061, 2012, ISSN: 0009-2665.
Links | BibTeX | Tags: Condensed Matter - Quantum Gases, Condensed Matter - Strongly Correlated Electrons
@article{Baranov2012,
title = {Condensed Matter Theory of Dipolar Quantum Gases},
author = {M A Baranov and M Dalmonte and G Pupillo and P Zoller},
doi = {10.1021/cr2003568},
issn = {0009-2665},
year = {2012},
date = {2012-09-01},
journal = {Chemical Reviews},
volume = {112},
number = {9},
pages = {5012-5061},
keywords = {Condensed Matter - Quantum Gases, Condensed Matter - Strongly Correlated Electrons},
pubstate = {published},
tppubtype = {article}
}
2009
G Pupillo, A Micheli, M Boninsegni, I Lesanovsky, P Zoller
Mesoscopic Phases of Dipolar Ensembles with Polar Molecules and Rydberg Atoms Journal Article
In: arXiv:0904.2735 [cond-mat], 2009.
Abstract | BibTeX | Tags: Condensed Matter - Quantum Gases, Condensed Matter - Statistical Mechanics
@article{Pupillo2009,
title = {Mesoscopic Phases of Dipolar Ensembles with Polar Molecules and Rydberg Atoms},
author = {G Pupillo and A Micheli and M Boninsegni and I Lesanovsky and P Zoller},
year = {2009},
date = {2009-04-01},
journal = {arXiv:0904.2735 [cond-mat]},
abstract = {We discuss the realization of mesoscopic phases of dipolar gases relevant to current experiments with cold polar molecules and Rydberg atoms confined to two dimensions. We predict the existence of superfluid clusters, mesoscopic supersolids, and crystals for a small number of trapped particles, with no counterpart in the homogeneous situation. For certain strengths of the dipole-dipole interactions, the stabilization of purely $backslash$it non-classical crystals by quantum fluctuations is possible. We propose a magnification scheme to detect the spatial structure of these crystalline phases.},
keywords = {Condensed Matter - Quantum Gases, Condensed Matter - Statistical Mechanics},
pubstate = {published},
tppubtype = {article}
}
We discuss the realization of mesoscopic phases of dipolar gases relevant to current experiments with cold polar molecules and Rydberg atoms confined to two dimensions. We predict the existence of superfluid clusters, mesoscopic supersolids, and crystals for a small number of trapped particles, with no counterpart in the homogeneous situation. For certain strengths of the dipole-dipole interactions, the stabilization of purely $backslash$it non-classical crystals by quantum fluctuations is possible. We propose a magnification scheme to detect the spatial structure of these crystalline phases.
Publications
2019
Exploring out-of-equilibrium quantum magnetism and thermalization in a spin-3 many-body dipolar lattice system Journal Article
In: Nature Communications, 10 (1714), 2019.
Supersolid Phases of Rydberg-Excited Bosons on a Triangular Lattice Journal Article
In: arXiv:1903.01912 [cond-mat], 2019.
2016
Cluster Bose Metals Journal Article
In: arXiv:1606.04267 [cond-mat], 2016.
2012
Condensed Matter Theory of Dipolar Quantum Gases Journal Article
In: Chemical Reviews, 112 (9), pp. 5012-5061, 2012, ISSN: 0009-2665.
2009
Mesoscopic Phases of Dipolar Ensembles with Polar Molecules and Rydberg Atoms Journal Article
In: arXiv:0904.2735 [cond-mat], 2009.