433 citations · 1.7k across the 9 of their papers we have counts for
9 papers
Roton Excitations in an Oblate Dipolar Quantum Gas
Jan-Niklas Schmidt, Jens Hertkorn, Mingyang Guo +7
We observe signatures of radial and angular roton excitations around a droplet crystallization transition in dipolar Bose-Einstein condensates. In situ measurements are used to cha…
Density Fluctuations across the Superfluid-Supersolid Phase Transition in a Dipolar Quantum Gas
J. Hertkorn, J. -N. Schmidt, F. Böttcher +8
Phase transitions share the universal feature of enhanced fluctuations near the transition point. Here we show that density fluctuations reveal how a Bose-Einstein condensate of di…
New states of matter with fine-tuned interactions: quantum droplets and dipolar supersolids
Fabian Böttcher, Jan-Niklas Schmidt, Jens Hertkorn +5
Quantum fluctuations can stabilize Bose-Einstein condensates (BEC) against the mean-field collapse. Stabilization of the condensate has been observed in quantum degenerate Bose-Bos…
The Fate of the Higgs Mode in a Trapped Dipolar Supersolid
Jens Hertkorn, Fabian Böttcher, Mingyang Guo +4
We theoretically investigate the spectrum of elementary excitations of a trapped dipolar quantum gas across the BEC-supersolid phase transition. Our calculations reveal the existen…
The low-energy Goldstone mode in a trapped dipolar supersolid
Mingyang Guo, Fabian Böttcher, Jens Hertkorn +5
A supersolid is a counter-intuitive state of matter that combines the frictionless flow of a superfluid with the crystal-like periodic density modulation of a solid. Since the firs…
Dilute dipolar quantum droplets beyond the extended Gross-Pitaevskii equation
Fabian Böttcher, Matthias Wenzel, Jan-Niklas Schmidt +8
Dipolar quantum droplets are exotic quantum objects that are self-bound due to the subtle balance of attraction, repulsion and quantum correlations. Here we present a systematic st…
Transient supersolid properties in an array of dipolar quantum droplets
Fabian Böttcher, Jan-Niklas Schmidt, Matthias Wenzel +4
We study theoretically and experimentally the emergence of supersolid properties in a dipolar Bose-Einstein condensate. The theory reveals a ground state phase diagram with three d…
Anisotropic Superfluid Behavior of a Dipolar Bose-Einstein Condensate
Matthias Wenzel, Fabian Böttcher, Jan-Niklas Schmidt +4
We present transport measurements on a dipolar superfluid using a Bose-Einstein condensate of Dy-162 with strong magnetic dipole-dipole interactions. By moving an attractive laser…
Single Photon Transistor Mediated by Inter-State Rydberg Interaction
Hannes Gorniaczyk, Christoph Tresp, Johannes Schmidt +2
We report on the realization of an all-optical transistor by mapping gate and source photons into strongly interacting Rydberg excitations with different principal quantum numbers…