Maintaining supersolidity in one and two dimensions
@article{Poli2021MaintainingSI, title={Maintaining supersolidity in one and two dimensions}, author={E. Poli and Thomas Bland and Claudia Politi and Lauritz Klaus and Matthew A. Norcia and Francesca Ferlaino and Russell N. Bisset and Luis Santos}, journal={Physical Review A}, year={2021} }
We theoretically investigate supersolidity in three-dimensional dipolar Bose-Einstein condensates. We focus on the role of trap geometry in determining the dimensionality of the resulting droplet arrays, which range from one-dimensional to zigzag, through to two-dimensional supersolids in circular traps. Supersolidity is well established in one-dimensional arrays, and may be just as favorable in two-dimensional arrays provided that one appropriately scales the atom number to the trap volume. We…
7 Citations
Two-Dimensional Supersolid Formation in Dipolar Condensates.
- PhysicsPhysical review letters
- 2022
Dipolar condensates have recently been coaxed to form the long-sought supersolid phase. While one-dimensional supersolids may be prepared by triggering a roton instability, we find that such a…
Supersolidity and crystallization of a dipolar Bose gas in an infinite tube
- PhysicsPhysical Review A
- 2023
We calculate the ground states of a dipolar Bose gas confined in an infinite tube potential. We use the extended Gross-Pitaevskii equation theory and present a novel numerical method to efficiently…
Domain supersolids in binary dipolar condensates
- Physics
- 2022
Two-component dipolar condensates are now experimentally producible, and we theoretically investigate the nature of supersolidity in this system. We predict the existence of a binary supersolid state…
Ground-state stability and excitation spectrum of a one-dimensional dipolar supersolid
- PhysicsPhysical Review A
- 2023
We study the behavior of the excitation spectrum across the quantum phase transition from a superfluid to a supersolid phase of a dipolar Bose gas confined to a one-dimensional geometry. Including…
How to realize a homogeneous dipolar Bose gas in the roton regime
- PhysicsPhysical Review A
- 2022
Homogeneous quantum gases open up new possibilities for studying many-body phenomena and have now been realised for a variety of systems. For gases with short-range interactions the way to make the…
Can Angular Oscillations Probe Superfluidity in Dipolar Supersolids?
- PhysicsPhysical review letters
- 2022
Angular oscillations can provide a useful probe of the superfluid properties of a system. Such measurements have recently been applied to dipolar supersolids, which exhibit both density modulation…
83 References
Two-dimensional supersolidity in a circular trap
- Physics
- 2021
Dipolar condensates have recently been coaxed into supersolid phases supporting both superfluid and crystal excitations. While one-dimensional (1D) supersolids may be prepared via a roton…
Transient Supersolid Properties in an Array of Dipolar Quantum Droplets
- PhysicsPhysical Review X
- 2019
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 distinct regimes - a…
Excitation Spectrum of a Trapped Dipolar Supersolid and Its Experimental Evidence.
- PhysicsPhysical review letters
- 2019
Theoretically, it is shown that, when entering the supersolid phase, two distinct excitation branches appear, respectively associated with dominantly crystal and superfluid excitations, and these results confirm infinite-system predictions, showing that finite-size effects play only a small qualitative role.
Two-dimensional supersolidity in a dipolar quantum gas
- PhysicsNature
- 2021
The extension of supersolid properties into two dimensions is demonstrated by preparing a supersolid quantum gas of dysprosium atoms on both sides of a structural phase transition similar to those occurring in ionic chains17-20, quantum wires21,22 and theoretically in chains of individual dipolar particles.
Supersolid behavior of a dipolar Bose-Einstein condensate confined in a tube
- PhysicsPhysical Review A
- 2019
Motivated by a recent experiment [L. Chomaz et al., Nat. Phys. 14, 442 (2018)], we perform numerical simulations of a dipolar Bose-Einstein condensate (BEC) in a tubular, periodic confinement at…
Rotating a Supersolid Dipolar Gas.
- PhysicsPhysical review letters
- 2020
The moment of inertia of a harmonically trapped dipolar Bose-Einstein condensed gas is calculated as a function of the tunable scattering length parameter, providing the transition from the (fully) superfluid to the supersolid phase and eventually to an incoherent crystal of self-bound droplets.
The low-energy Goldstone mode in a trapped dipolar supersolid
- PhysicsNature
- 2019
Observation of the collective mode responding to the superfluid stiffness—the low-energy Goldstone mode—provides direct evidence for phase rigidity, which is a key signature of supersolidity in an ultracold quantum gas.
Supersolid edge and bulk phases of a dipolar quantum gas in a box
- PhysicsPhysical Review Research
- 2022
We investigate the novel density distributions acquired by a dipolar Bose-Einstein condensed gas confined in a box potential, with special focus on the effects of supersolidity. Differently from the…
Vortex properties in the extended supersolid phase of dipolar Bose-Einstein condensates
- PhysicsPhysical Review A
- 2021
We study the properties of singly-quantized linear vortices in the supersolid phase of a dipolar Bose-Einstein condensate at zero temperature modeling $^{164}$Dy atoms. The system is extended in the…
Persistent currents in toroidal dipolar supersolids
- Physics
- 2021
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 momenta, we…