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Supersolidity in the ultracold: when atoms behave as solid and superfluid at the same time

Francesca Ferlaino

Bulletin of the American Physical SocietyMar 3, 20200 citations

Superfluid and supersolid phases of dipolar Bose gases in an optical lattice

Ippei Danshita, Carlos A. R. Sá de Melo

Bulletin of the American Physical SocietyMay 28, 20080 citations

Dipolar Quantum Gases go Supersolid

Tobias Donner

Three research teams observe that gases of magnetic atoms have the properties of a supersolid-a material whose atoms are crystallized yet flow without friction.

PhysicsApr 3, 20199 citations

Long-Lived and Transient Supersolid Behaviors in Dipolar Quantum Gases

Lauriane Chomaz, Daniel Petter, P. Ilzhöfer +9 more

Experiments achieve long-lived hallmarks of supersolidity---an exotic phase of matter where superfluidity and crystalline order coexist---via two different techniques, setting the stage for future investigations into the phase's behavior.

arXiv:1903.04375Physical Review XApr 19, 2019457 citations

Two-dimensional supersolidity in a dipolar quantum gas

Matthew A. Norcia, Claudia Politi, Lauritz Klaus +6 more

Abstract Supersolid states simultaneously feature properties typically associated with a solid and with a superfluid. Like a solid, they possess crystalline order, manifesting as a periodic modulation of the particle density; but unlike a typical solid, they also have superfluid properties, resulting from coherent particle delocalization across the system. Such states were initially envisioned in the context of bulk solid helium, as a possible answer to the question of whether a solid could have superfluid properties1–5. Although supersolidity has not been observed in solid helium (despite much effort)6, ultracold atomic gases provide an alternative approach, recently enabling the observation and study of supersolids with dipolar atoms7–16. However, unlike the proposed phenomena in helium, these gaseous systems have so far only shown supersolidity along a single direction. Here we demonstrate the extension of supersolid properties into two dimensions 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 particles23, 24. This opens the possibility of studying rich excitation properties25–28, including vortex formation29–31, and ground-state phases with varied geometrical structure7, 32 in a highly flexible and controllable system.Abstract Supersolid states simultaneously feature properties typically associated with a solid and with a superfluid. Like a solid, they possess crystalline order, manifesting as a periodic modulation of the particle density; but unlike a typical solid, they also have superfluid properties, resulting from coherent particle delocalization across the system. Such states were initially envisioned in the context of bulk solid helium, as a possible answer to the question of whether a solid could have superfluid properties1–5. Although supersolidity has not been observed in solid helium (despite much effort)6, ultracold atomic gases provide an alternative approach, recently enabling the observation and study of supersolids with dipolar atoms7–16. However, unlike the proposed phenomena in helium, these gaseous systems have so far only shown supersolidity along a single direction. Here we demonstrate the extension of supersolid properties into two dimensions 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 particles23, 24. This opens the possibility of studying rich excitation properties25–28, including vortex formation29–31, and ground-state phases with varied geometrical structure7, 32 in a highly flexible and controllable system.

Jan 1, 2021163 citations

Supersolidity in ultracold dipolar gases

Alessio Recati, S. Stringari

arXiv:2405.09537Nature Reviews PhysicsOct 9, 202361 citations

Dipolar supersolids: Solid and superfluid at the same time

Abstract

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Dipolar supersolids: Solid and superfluid at the same time

Abstract

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