Dissipative dynamics and cooling rates of trapped impurity atoms immersed in a reservoir gas
Physical Review A American Physical Society (APS) 101:3 (2020) 033612
Tunable geometries from a sparse quantum spin network
Proceedings of SPIE SPIE, the international society for optics and photonics 11296 (2020) 112963w-112963w-16
Enhanced Superexchange in a Tilted Mott Insulator.
Physical review letters 124:4 (2020) 043204
Abstract:
In an optical lattice, entropy and mass transport by first-order tunneling are much faster than spin transport via superexchange. Here we show that adding a constant force (tilt) suppresses first-order tunneling, but not spin transport, realizing new features for spin Hamiltonians. Suppression of the superfluid transition can stabilize larger systems with faster spin dynamics. For the first time in a many-body spin system, we vary superexchange rates by over a factor of 100 and tune spin-spin interactions via the tilt. In a tilted lattice, defects are immobile and pure spin dynamics can be studied.Measurement and feedback for cooling heavy levitated particles in low-frequency traps
Physical Review A American Physical Society (APS) 100:6 (2019) 063819
Observation of nonequilibrium motion and equilibration in polariton rings
Physical Review B American Physical Society (APS) 100:24 (2019) 245304