New states of matter with fine-tuned interactions: quantum droplets and dipolar supersolids

F Böttcher, JN Schmidt, J Hertkorn… - Reports on Progress …, 2020 - iopscience.iop.org
Quantum fluctuations can stabilize Bose–Einstein condensates (BEC) against the mean-
field collapse. Stabilization of the condensate has been observed in quantum degenerate …

Few-body Bose gases in low dimensions—A laboratory for quantum dynamics

SI Mistakidis, AG Volosniev, RE Barfknecht, T Fogarty… - Physics Reports, 2023 - Elsevier
Cold atomic gases have become a paradigmatic system for exploring fundamental physics,
which at the same time allows for applications in quantum technologies. The accelerating …

Pattern formation in quantum ferrofluids: From supersolids to superglasses

J Hertkorn, JN Schmidt, M Guo, F Böttcher, KSH Ng… - Physical Review …, 2021 - APS
Pattern formation is a ubiquitous phenomenon observed in nonlinear and out-of-equilibrium
systems. In equilibrium, quantum ferrofluids formed from ultracold atoms were recently …

Supersolid-like square-and honeycomb-lattice crystallization of droplets in a dipolar condensate

LE Young-S, SK Adhikari - Physical Review A, 2022 - APS
We demonstrate a supersolid-like spatially periodic square-and honeycomb-lattice
crystallization of droplets in addition to the commonly studied triangular-lattice crystallization …

Multiring, stripe, and superlattice solitons in a spin-orbit-coupled spin-1 condensate

SK Adhikari - Physical Review A, 2021 - APS
We demonstrate exotic stable quasi-two-dimensional solitons in a Rashba or a Dresselhaus
spin-orbit (SO)-coupled hyperfine spin-1 (F= 1) trapless antiferromagnetic Bose-Einstein …

Prediction of a supersolid phase in high-pressure deuterium

CW Myung, B Hirshberg, M Parrinello - Physical Review Letters, 2022 - APS
Supersolid is a mysterious and puzzling state of matter whose possible existence has stirred
a vigorous debate among physicists for over 60 years. Its elusive nature stems from the …

Supersolid formation in a dipolar condensate by roton instability

A Alaña, IL Egusquiza, M Modugno - Physical Review A, 2023 - APS
We characterize the role of roton instability in the formation of a supersolid state of an
elongated dipolar condensate, following a quench of the contact interactions across the …

Crossing the superfluid-supersolid transition of an elongated dipolar condensate

A Alaña, N Antolini, G Biagioni, IL Egusquiza… - Physical Review A, 2022 - APS
We provide a theoretical characterization of the dynamical crossing of the superfluid-
supersolid phase transition for a dipolar condensate confined in an elongated trap, as …

Dipole-mode and scissors-mode oscillations of a dipolar supersolid

LE Young-S, SK Adhikari - Physical Review A, 2023 - APS
We study dipole-mode and scissors-mode oscillations of a harmonically trapped dipolar
supersolid, composed of dipolar droplets arranged on a one-dimensional (1D) or a 2D …

Supersolid-like square-and triangular-lattice crystallization of dipolar droplets in a box trap

LE Young-S, SK Adhikari - The European Physical Journal Plus, 2022 - Springer
Using a beyond-mean-field model including a Lee-Huang-Yang-type interaction, we
demonstrate a supersolid-like spatially-periodic square-and triangular-lattice crystallization …