464 citations · 1.2k across the 13 of their papers we have counts for
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Life and death of the Bose polaron
Magnus G. Skou, Kristian Knakkergaard Nielsen, Thomas G. Skov +6
Spectroscopic and interferometric measurements complement each other in extracting the fundamental properties of quantum many-body systems. While spectroscopy provides precise meas…
Observation of a Lee-Huang-Yang Fluid
Thomas G. Skov, Magnus G. Skou, Nils B. Jørgensen +1
We observe monopole oscillations in a mixture of Bose-Einstein condensates, where the usually dominant mean-field interactions are canceled. In this case, the system is governed by…
Non-equilibrium quantum dynamics and formation of the Bose polaron
Magnus G. Skou, Thomas G. Skov, Nils B. Jørgensen +5
Advancing our understanding of non-equilibrium phenomena in quantum many-body systems remains among the greatest challenges in physics. Here, we report on the experimental observat…
Analyzing a Bose polaron across resonant interactions
L. A. Peña Ardila, N. B. Jörgensen, T. Pohl +3
Recently, two independent experiments reported the observation of long-lived polarons in a Bose-Einstein condensate, providing an excellent setting to study the generic scenario of…
Dilute Fluid Governed by Quantum Fluctuations
Nils B. Jørgensen, Georg M. Bruun, Jan J. Arlt
Understanding the effects of interactions in complex quantum systems beyond the mean-field paradigm constitutes a fundamental problem in physics. Here, we show how the atom numbers…
Temperature dependence of an Efimov resonance in
Lars J. Wacker, Nils B. Jørgensen, Kristoffer T. Skalmstang +3
Ultracold atomic gases are an important testing ground for understanding few-body physics. In particular, these systems enable a detailed study of the Efimov effect. We use ultraco…
Time-of-flight expansion of binary Bose-Einstein condensates at finite temperature
Kean Loon Lee, Nils B. Jørgensen, Lars J. Wacker +4
Ultracold quantum gases provide a unique setting for studying and understanding the properties of interacting quantum systems. Here, we investigate a multi-component system of $^{8…
Phase Separation and Dynamics of two-component Bose-Einstein condensates
Kean Loon Lee, Nils B. Jørgensen, I-Kang Liu +3
The miscibility of two interacting quantum systems is an important testing ground for the understanding of complex quantum systems. Two-component Bose-Einstein condensates enable t…
Observation of Attractive and Repulsive Polarons in a Bose-Einstein Condensate
Nils B. Jørgensen, Lars Wacker, Kristoffer T. Skalmstang +5
The problem of an impurity particle moving through a bosonic medium plays a fundamental role in physics. However, the canonical scenario of a mobile impurity immersed in a Bose-Ein…
Universal three-body physics in ultracold KRb mixtures
L. J. Wacker, N. B. Jørgensen, D. Birkmose +5
Ultracold atomic gases have recently become a driving force in few-body physics due to the observation of the Efimov effect. While initially observed in equal mass systems, one exp…
Tunable dual-species Bose-Einstein condensates of K and Rb
L. Wacker, N. B. Jørgensen, D. Birkmose +6
We present the production of dual-species Bose-Einstein condensates of and . Preparation of both species in the $\left| F=1,m_F=-1 \right\rangle…