A superfluid-droplet crystal and a free-space supersolid in a dipole-blockaded gas

Details A superfluid-droplet crystal and a free-space supersolid in a dipole-blockaded gas A superfluid-droplet crystal and a free-space supersolid in a dipole-blockaded gas

2010-05-13

arxiv.org/abs/1005.2403v4

DOI: Phys. Rev. Lett. 105, 135301 (2010)

Physics

Condensed Matter

Quantum Gases

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.105.135301

A novel supersolid phase is predicted for an ensemble of Rydberg atoms in the dipole-blockade regime, interacting via a repulsive dipolar potential "softened" at short distances. Using exact numerical techniques, we study the low temperature phase diagram of this system, and observe an intriguing phase consisting of a crystal of mesoscopic superfluid droplets. At low temperature, phase coherence throughout the whole system, and the ensuing bulk superfluidity, are established through tunnelling of identical particles between neighbouring droplets.

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