{"id":186,"date":"2018-06-24T21:58:29","date_gmt":"2018-06-24T19:58:29","guid":{"rendered":"http:\/\/ultracold.at\/grimm\/?page_id=186"},"modified":"2023-05-09T07:25:55","modified_gmt":"2023-05-09T05:25:55","slug":"lik","status":"publish","type":"page","link":"https:\/\/ultracold.at\/grimm\/lik\/","title":{"rendered":"Li-K mixture lab"},"content":{"rendered":"

We are interested in the many-body physics of impurities in a fermionic environment under conditions of strong interactions. Our experimental model system consists of fermions (K-40) or bosons (K-41) in an optically trapped sea of fermions (Li-6). Interaction tuning is provided by interspecies Feshbach resonances. We prepare Fermi polarons as microscopic impurities or small Bose-Einstein condensates as mescoscopic impurities, and study the fundamental interactions and the static and dynamic properties using various experimental tools.<\/p>\n

\"\"
The team on 02 Mar 2018 at Maria Waldrast: Tanner Grogan, Andrea Bergschneider, Cosetta Baroni, Thomas \u00d6ttl, Emil Kirilov, Isabella Fritsche, Richard Schmidt (external collaboration partner), Rianne Lous, Bo Huang, Jook Walraven, Rudi Grimm<\/figcaption><\/figure>\n

Our work is funded by\u00a0 the Austrian Science Fund FWF within SFB FoQuS (project part P04).
\n\"\"<\/a>\"\"<\/a><\/p>\n

Fermi impurities: Polarons and beyond<\/strong><\/p>\n

Mediated interactions between Fermi <\/span>polarons and the role of impurity quantum<\/span>
statistics<\/span>
\n<\/em>C. Baroni, B. Huang (\u9ec4\u535a), I. Fritsche, E. Dobler, G. Anich, E. Kirilov, R. Grimm, M. A. <\/span>Bastarrachea-Magnani<\/span>, P. Massignan<\/span>,<\/span> G. <\/span>Bruun<\/span>
\narXiv:2305.04915<\/a><\/p>\n

Stability and breakdown of Fermi polarons in a strongly interacting Fermi-Bose mixture
\n<\/em>I. Fritsche, C. Baroni, E. Dobler, E. Kirilov, B. Huang (\u9ec4\u535a), R. Grimm, G. Bruun, P. Massignan
\nPhys. Rev. A 103<\/strong>, 053314 (2021)<\/a>; arXiv:2103.03625<\/a><\/p>\n

Ultrafast many-body interferometry of impurities coupled to a Fermi sea<\/em>
\nM. Cetina, M. Jag, R. S. Lous, I. Fritsche, J. T. M. Walraven, R. Grimm, J. Levinsen, M. M. Parish, R. Schmidt, M. Knap, E. Demler
\nScience 354<\/strong>, 96 (2016)<\/a>; arXiv:1604.07423<\/a><\/p>\n

Decoherence of Impurities in a Fermi Sea of Ultracold Atoms<\/em>
\nM. Cetina, M. Jag, R. S. Lous, J. T.\u2009M. Walraven, R. Grimm, R. S. Christensen, G. M. Bruun
\nPhys. Rev. Lett. 115<\/strong>, 135302 (2015)<\/a>; arXiv:1505.00738<\/a><\/p>\n

Metastability and coherence of repulsive polarons in a strongly interacting Fermi mixture<\/em>
\nC. Kohstall, M. Zaccanti, M. Jag, A. Trenkwalder, P. Massignan, G. Bruun, F. Schreck, R. Grimm
\nNature 485<\/strong>, 615 (2012)<\/a>; arXiv:1112.0020<\/a><\/p>\n

BEC in a Fermi sea<\/strong><\/p>\n

BEC immersed in a Fermi<\/span> sea: Theory of static and dynamic behavior across phase separation
\n<\/em>B. Huang (\u9ec4\u535a)
\n<\/em>Phys. Rev. A 101<\/strong>, 063618 (2020)<\/a>; arXiv:2004.09227<\/a><\/p>\n

Breathing Mode of a BEC Repulsively Interacting with a Fermionic Reservoir
\n<\/em>B. Huang (\u9ec4\u535a), I. Fritsche, R. S. Lous, C. Baroni, J. T. M. Walraven, E. Kirilov, R. Grimm
\nPhys. Rev. A 99, 041602(R) (2019)<\/a>; <\/a>arXiv:1812.06445<\/a><\/p>\n

Probing the Interface of a Phase-Separated State in a Repulsive Bose-Fermi Mixture<\/em>
\nR. S. Lous, I. Fritsche, M. Jag, F. Lehmann, E. Kirilov, B. Huang (\u9ec4\u535a), R. Grimm
\nPhys. Rev. Lett. 120<\/strong>, 243403 (2018)<\/a>; arXiv:1802.01954<\/a><\/p>\n

Thermometry of a deeply degenerate Fermi gas with a Bose-Einstein condensate<\/em>
\nR. S. Lous, I. Fritsche, M. Jag, B. Huang (\u9ec4\u535a), R. Grimm
\nPhys. Rev. A 95<\/strong>, 053627 (2017)<\/a>; arXiv:1702.02772<\/a><\/p>\n

Ultracold molecules and few-body phenomena<\/strong><\/p>\n

Lifetime of Feshbach dimers in a Fermi-Fermi mixture of <\/span>Li-6<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> and <\/em><\/span>K-40<\/em>
\n<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>M. Jag, M. Cetina, R. S. Lous, R. Grimm, J. Levinsen, D. S. Petrov
\nPhys. Rev. A 94<\/strong>, 062706 (2016)<\/a>; arXiv:1608.07425<\/a><\/p>\n

Observation of a Strong Atom-Dimer Attraction in a Mass-Imbalanced Fermi-Fermi Mixtur<\/em>e
\nM. Jag, M. Zaccanti, M. Cetina, R. S. Lous, F. Schreck, R. Grimm, D. S. Petrov, J. Levinsen
\nPhys. Rev. Lett. 112<\/strong>, 075302 (2014)<\/a>; arXiv:1311.5146<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

We are interested in the many-body physics of impurities in a fermionic environment under conditions of strong interactions. Our experimental model system consists of fermions (K-40) or bosons (K-41) in an optically trapped sea of fermions (Li-6). Interaction tuning is provided by interspecies Feshbach resonances. We prepare Fermi polarons as microscopic impurities or small Bose-Einstein … Continue reading “Li-K mixture lab”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"_links":{"self":[{"href":"https:\/\/ultracold.at\/grimm\/wp-json\/wp\/v2\/pages\/186"}],"collection":[{"href":"https:\/\/ultracold.at\/grimm\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/ultracold.at\/grimm\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/ultracold.at\/grimm\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ultracold.at\/grimm\/wp-json\/wp\/v2\/comments?post=186"}],"version-history":[{"count":18,"href":"https:\/\/ultracold.at\/grimm\/wp-json\/wp\/v2\/pages\/186\/revisions"}],"predecessor-version":[{"id":852,"href":"https:\/\/ultracold.at\/grimm\/wp-json\/wp\/v2\/pages\/186\/revisions\/852"}],"wp:attachment":[{"href":"https:\/\/ultracold.at\/grimm\/wp-json\/wp\/v2\/media?parent=186"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}