7 papers
Geometric superfluid stiffness of Kekulé superconductivity in magic-angle twisted bilayer graphene
Ke Wang, Qijin Chen, Rufus Boyack +1
Superconductivity in twisted graphene is probed by tunneling spectroscopy and superfluid stiffness, two observables that access the same order parameter from complementary perspect…
Kekulé Superconductivity in Twisted Magic Angle Bilayer Graphene
Ke Wang, K. Levin
While it has been one of the most important new physics discoveries in the last decade, the nature of superconductivity in the twisted graphene family remains an unsolved problem.…
Tunable Molecular Interactions Near an Atomic Feshbach Resonance: Stability and Collapse of a Molecular Bose-Einstein Condensate
Zhiqiang Wang, Ke Wang, Zhendong Zhang +3
Understanding and controlling interactions of ultracold molecules is a cornerstone of quantum chemistry. While the laboratory creation of degenerate molecular gases comprised of bo…
Quench induced collective excitations: from breathing to acoustic modes
Shicong Song, Ke Wang, Zhengli Wu +3
In trapped Bose-Einstein condensates, interaction quenches which are abrupt changes of the interaction strength typically implemented via Feshbach tuning, are a practical and widel…
Universal coherent atom-molecule oscillations in the dynamics of the unitary Bose gas near a narrow Feshbach resonance
Ke Wang, Zhendong Zhang, Shu Nagata +2
Quench experiments on a unitary Bose gas around a broad Feshbach resonance have led to the discovery of universal dynamics. This universality is manifested in the measured atomic m…
Non-Quantum-Critical Routes to Magnetic Superconductivity
Zhiqiang Wang, Ke Wang, K. Levin
Electronic superconductivity is most commonly understood to be associated with magnetic quantum criticality. This framework is natural when a quantum critical point is present belo…