59 citations · 86 across the 9 of their papers we have counts for
9 papers
Superfluid-droplet crossover in a binary boson mixture on a ring: Exact diagonalization solutions for few-particle systems in one dimension
L. Chergui, J. Bengtsson, J. Bjerlin +3
We investigate the formation of self-bound quantum droplets in a one-dimensional binary mixture of bosonic atoms, applying the method of numerical diagonalization of the full Hamil…
Symmetry-controlled singlet-triplet transition in a double-barrier quantum ring
Heidi Potts, Josef Josefi, I-Ju Chen +6
We engineer a system of two strongly confined quantum dots to gain reproducible electrostatic control of the spin at zero magnetic field. Coupling the dots in a tight ring-shaped p…
Interplay between shell structure and trap deformation in dipolar fermi gases
J. Bengtsson, G. Eriksson, J. Josefi +2
Finite fermion systems are known to exhibit shell structure in the weakly-interacting regime, as well known from atoms, nuclei, metallic clusters or even quantum dots in two dimens…
Persistent Currents in Toroidal Dipolar Supersolids
M. Nilsson Tengstrand, D. Boholm, R. Sachdeva +2
We investigate the rotational properties of a dipolar Bose-Einstein condensate trapped in a toroidal geometry. Studying the ground states in the rotating frame and at fixed angular…
A two-state model for vortex nucleation in a rotating Bose-Einstein condensate
G. Eriksson, J. Bengtsson, G. M. Kavoulakis +1
It is well-known that a rotating Bose-Einstein condensate forms vortices to carry the angular momentum. For a first vortex to nucleate at the trap center, the rotational frequency…
Bosonic Szilard Engine Assisted by Feshbach Resonances
J. Bengtsson, M. Nilsson Tengstrand, S. M. Reimann
It was recently found that the information-to-work conversion in a quantum Szilard engine can be increased by using a working medium of bosons with attractive interactions. In the…
Dipolar particles in a double-trap confinement: Response to tilting the dipolar orientation
J. Bjerlin, J. Bengtsson, F. Deuretzbacher +2
We analyze the microscopic few-body properties of dipolar particles confined in two parallel quasi-one-dimensional harmonic traps. In particular, we show that an adiabatic rotation…
Finite-size effects in the dynamics of few bosons in a ring potential
G. Eriksson, J. Bengtsson, E. Ö. Karabulut +2
We study the temporal evolution of a small number of ultra-cold bosonic atoms confined in a ring potential. Assuming that initially the system is in a solitary-wave solution of…
Supremacy of the quantum many-body Szilard engine with attractive bosons
Jakob Bengtsson, Mikael Nilsson Tengstrand, Andreas Wacker +4
In a classic thought experiment, Szilard suggested a heat engine where a single particle, for example an atom or a molecule, is confined in a container coupled to a single heat bat…