Mobile ion in a Fermi sea

Ultracold ion-atom experiments: cooling, chemistry, and quantum effects

“…These experiments build on the earlier experimental work on hybrid systems (Smith et al, 2005;Grier et al, 2009;Zipkes et al, 2010;Schmid et al, 2010;Ravi et al, 2012;Haze et al, 2015;Meir et al, 2016;Schowalter et al, 2016;Kleinbach et al, 2018), which looked the reactions that take place (Härter et al, 2012;Ratschbacher et al, 2012Ratschbacher et al, , 2013Haze et al, 2015;Krükow et al, 2016;Saito et al, 2017) and studied the cold ion-atom collisions (Zipkes et al, 2011;Meir et al, 2016;. The ongoing work is further stimulated by the recent theory insights into, e.g., ion-atom interactions (Tscherbul et al, 2016;Schmid et al, 2018;Secker et al, 2017;Côté and Simbotin, 2018;Śmia lkowski and Tomza, 2020;Tomza and Lisaj, 2020;Wang et al, 2020;Dörfler et al, 2020;Bosworth et al, 2021;Pérez-Ríos, 2021b), quantum simulation of impurity and many-body physics (Bissbort et al, 2013;Negretti et al, 2014;Schurer et al, 2014;Midya et al, 2016;Pérez-Ríos, 2021a;Astrakharchik et al, 2021;Christensen et al, 2021Christensen et al, , 2022Oghittu et al, 2021;Ding et al, 2022) and proposals for applications in quantum information processing…”

“…Of special interest is the ionic polaron, which unlike its neutral atom counterpart, is not short-ranged. This causes the typical polaron picture to break down and measuring the ionic polarons properties would shed light on this quasiparticle of intermediate range and its transport properties (Casteels et al, 2011;Astrakharchik et al, 2021;Christensen et al, 2021;Oghittu et al, 2021;Christensen et al, 2022). For the transport studies improving the timeresolution to look at shorter timescales is an important premise, as here the quantum effects play a role.…”

Many-body bound states and induced interactions of charged impurities in a bosonic bath

“…Such studies, however, do not take into account the possibility of the formation of many-body bound states [29][30][31][32], whose occurrence substantially affects the properties of the mixture. Motivated by experimental progress in the realization and control of atom-ion quantum mixtures as well as their relevance in the context of quantum simulation [11,33,34], quantum transport [35][36][37][38], as well as applications in quantum information processing [39,40] and thermometry [41], we investigate here the ground state properties of two ions in a bosonic bath. In Sec.…”

Many-body bound states and induced interactions of charged impurities in a bosonic bath

“…Other quantum ion-atom-based simulation ideas include, e.g., the formation of lattice bipolarons with low effective mass 15 and ion-induced interactions in Tomonaga-Luttinger liquids 16 . Furthermore, such setups can be relevant in the context of quantum simulation 15,17,18 , quantum transport [19][20][21][22] , as well as applications in quantum information processing 23,24 and thermometry 25 . A few experimental groups have recently attained the ultracold collisional regime in radio-frequency traps 26,27 .…”