[Compression géométrique d’un gaz quantique en rotation vers le niveau de Landau fondamental]
La simulation de la physique de Hall à l’aide d’un gaz quantique en rotation se renouvelle grâce à de récentes avancées expérimentales qui ont permis l’observation d’un condensat de Bose–Einstein entièrement contenu dans le niveau de Landau fondamental. Nous décrivons ici ce résultat expérimental d’un point de vue théorique, et donnons une interprétation en termes de compression du degré de liberté géométrique du système, la métrique des centres de dérive. Cette « compression géométrique » offre un contrôle expérimental sans précédent sur la géométrie quantique des systèmes analogues aux niveaux de Landau, et ouvre une nouvelle voie vers la création de phases quantiques corrélées similaires aux états de Hall avec des atomes ultra-froids.
The simulation of quantum Hall physics with rotating quantum gases is witnessing a revival due to recent experimental advances that enabled the observation of a Bose–Einstein condensate entirely contained in its lowest kinetic energy state, i.e. the lowest Landau level. We theoretically describe this experimental result, and show that it can be interpreted as a squeezing of the geometric degree of freedom of the problem, the guiding center metric. This “geometric squeezing” offers an unprecedented experimental control over the quantum geometry in Landau-level analogues, and at the same time opens a realistic path towards achieving correlated quantum phases akin to quantum Hall states with neutral atoms.
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Mot clés : atomes ultra-froids, gaz quantique en rotation, simulation quantique
CC-BY 4.0
@article{CRPHYS_2023__24_S3_A2_0,
author = {Valentin Cr\'epel and Ruixiao Yao and Biswaroop Mukherjee and Richard Fletcher and Martin Zwierlein},
title = {Geometric squeezing of rotating quantum gases into the lowest {Landau} level},
journal = {Comptes Rendus. Physique},
publisher = {Acad\'emie des sciences, Paris},
year = {2023},
doi = {10.5802/crphys.173},
language = {en},
note = {Online first},
}
TY - JOUR AU - Valentin Crépel AU - Ruixiao Yao AU - Biswaroop Mukherjee AU - Richard Fletcher AU - Martin Zwierlein TI - Geometric squeezing of rotating quantum gases into the lowest Landau level JO - Comptes Rendus. Physique PY - 2023 PB - Académie des sciences, Paris N1 - Online first DO - 10.5802/crphys.173 LA - en ID - CRPHYS_2023__24_S3_A2_0 ER -
%0 Journal Article %A Valentin Crépel %A Ruixiao Yao %A Biswaroop Mukherjee %A Richard Fletcher %A Martin Zwierlein %T Geometric squeezing of rotating quantum gases into the lowest Landau level %J Comptes Rendus. Physique %D 2023 %I Académie des sciences, Paris %Z Online first %R 10.5802/crphys.173 %G en %F CRPHYS_2023__24_S3_A2_0
Valentin Crépel; Ruixiao Yao; Biswaroop Mukherjee; Richard Fletcher; Martin Zwierlein. Geometric squeezing of rotating quantum gases into the lowest Landau level. Comptes Rendus. Physique, Online first (2023), pp. 1-22. doi : 10.5802/crphys.173.
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