Cold hybrid ion-atom systems
Hybrid systems of laser-cooled trapped ions and ultracold atoms combined in a single
experimental setup have recently emerged as a new platform for fundamental research in …
experimental setup have recently emerged as a new platform for fundamental research in …
Impurities and polarons in bosonic quantum gases: a review on recent progress
This review describes the field of Bose polarons, arising when mobile impurities are
immersed into a bosonic quantum gas. The latter can be realized by a Bose-Einstein …
immersed into a bosonic quantum gas. The latter can be realized by a Bose-Einstein …
Bipolarons in a Bose-Einstein condensate
Mobile impurities in a Bose-Einstein condensate form quasiparticles called polarons. Here,
we show that two such polarons can bind to form a bound bipolaron state. Its emergence is …
we show that two such polarons can bind to form a bound bipolaron state. Its emergence is …
Quench dynamics and orthogonality catastrophe of Bose polarons
We monitor the correlated quench induced dynamical dressing of a spinor impurity
repulsively interacting with a Bose-Einstein condensate. Inspecting the temporal evolution of …
repulsively interacting with a Bose-Einstein condensate. Inspecting the temporal evolution of …
Bose polarons in ultracold atoms in one dimension: beyond the Fröhlich paradigm
Mobile impurity atoms immersed in Bose–Einstein condensates provide a new platform for
exploring Bose polarons. Recent experimental advances in the field of ultracold atoms make …
exploring Bose polarons. Recent experimental advances in the field of ultracold atoms make …
Universality of an impurity in a Bose-Einstein condensate
We consider the ground-state properties of an impurity particle (“polaron”) resonantly
interacting with a Bose-Einstein condensate (BEC). Focusing on the equal-mass system, we …
interacting with a Bose-Einstein condensate (BEC). Focusing on the equal-mass system, we …
Many-body bound states and induced interactions of charged impurities in a bosonic bath
Induced interactions and bound states of charge carriers immersed in a quantum medium
are crucial for the investigation of quantum transport. Ultracold atom-ion systems can …
are crucial for the investigation of quantum transport. Ultracold atom-ion systems can …
Bose polaron and the Efimov effect: A Gaussian-state approach
Since the Efimov effect was introduced, a detailed theoretical understanding of Efimov
physics has been developed in the few-body context. However, it has proven challenging to …
physics has been developed in the few-body context. However, it has proven challenging to …
Bose polarons at finite temperature and strong coupling
A mobile impurity coupled to a weakly interacting Bose gas, a Bose polaron, displays
several interesting effects. While a single attractive quasiparticle is known to exist at zero …
several interesting effects. While a single attractive quasiparticle is known to exist at zero …
Landau effective interaction between quasiparticles in a Bose-Einstein condensate
A Camacho-Guardian, GM Bruun - Physical Review X, 2018 - APS
Landau's description of the excitations in a macroscopic system in terms of quasiparticles
stands out as one of the highlights in quantum physics. It provides an accurate description of …
stands out as one of the highlights in quantum physics. It provides an accurate description of …