Many-body phases in dipolar atoms: novel quantum mixtures and supersolidity
DIPC Seminars
- Speaker
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Claudia Politi, Institute for Quantum Optics and Quantum Information, Innsbruck, Austria
- When
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2023/02/10
13:00 - Place
- Donostia International Physics Center
- Add to calendar
-
iCal
In the past decades, ultracold atomic gases revealed to be an ideal platform
for simulating quantum phenomena thanks to the ability to tune the inter-
particle interactions, the geometry of the system, and the possibility of
adding complexity in a controlled way. Recently, ultracold gases made of
magnetic atoms brought the discovery of exotic states of matter arising from
long-range and anisotropic dipole dipole interactions, such as liquid-like
self-bound droplets and supersolid states [1].
In this talk, I will present the latest results from our dipolar quantum gas
ex eriment, which combines the two highly magnetic atomic species, erbium and
dysprosium, merging for the first time the field of hetero-nuclear mixtures
with the one of ultracold dipolar gases. After the realization of dipolar
quantum mixtures of erbium and dysprosium [2] and the investigation of their
interspecies interactions [3,4], we proved supersolidity with dysprosium, a
state combining the phase coherence of a superfluid with the spatial
periodicity of a crystal.
By following the lifecycle of the supersolid state, we investigate the role
that thermal fluctuations play in the development of density modulation [5].
Finally, we extend the supersolid properties from one to two dimensions [6],
reaching circular supersolid states. This result paves the way for the study
of vortices, persistent currents, and phases with exotic geometry.
[1] L. Chomaz, I. Ferrier-Barbut, F. Ferlaino, B. Laburthe- Tolra, B. L. Lev,
and T. Pfau. Dipolar physics: A review of experiments with magnetic quantum
gases. arXiv preprint arXiv:2201.02672, 2022
[2] A. Trautmann, P. Ilzhöfer, G. Durastante, C. Politi, M. Sohmen, M. J.
Mark, and F. Ferlaino, Dipolar Quantum Mixtures of Erbium and Dysprosium
Atoms, Phys. Rev. Lett. 121, 213601 (2018).
[3] G. Durastante, C. Politi, M. Sohmen, P. Ilzhöfer, M. J. Mark, M. A.
Norcia, and F. Ferlaino, Feshbach resonances n an erbium-dysprosium dipolar
mixture, Phys. Rev. A 102, 033330 (2020).
[4] C. Politi, A. Trautmann, P. Ilzhöfer, G. Durastante, M. J. Mark, M.
Modugno, and F. Ferlaino, Interspecies interactions in an ultracold dipolar
mixture, Phys. Rev. A 105, 023304 (2022).[5] J. Sánchez-Baena, C. Politi, F.
Maucher, F. Ferlaino, and T. Pohl. Heating a quantum dipolar fluid into a
solid. arXiv preprint 2209.00335, 2022[6] M. A. Norcia*, C. Politi*, L. Klaus,
E. Poli, M. Sohmen, Manfred J. Mark, R. N. Bisset, L. Santos and F. Ferlaino,
Two-dimensional supersolidity in a dipolar quantum gas. Nature 596, 357–361
(2021).
Host: Ricardo Diez Muino
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