Theory of quantum systems

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Adiabatic preparation of entangled, magnetically ordered states with cold bosons in optical lattices

(2020)

Authors:

Araceli Venegas-Gomez, Johannes Schachenmayer, Anton S Buyskikh, Wolfgang Ketterle, Maria Luisa Chiofalo, Andrew J Daley
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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

Authors:

RG Lena, AJ Daley
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Measurement of Identical Particle Entanglement and the Influence of Antisymmetrisation

(2020)

Authors:

Jan Hendrik Becher, Enrico Sindici, Ralf Klemt, Selim Jochim, Andrew J Daley, Philipp M Preiss
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Tunable geometries from a sparse quantum spin network

Proceedings of SPIE--the International Society for Optical Engineering SPIE, the international society for optics and photonics 11296 (2020) 112963w-112963w-16

Authors:

Gregory S Bentsen, Tomohiro Hashizume, Emily J Davis, Anton S Buyskikh, Monika H Schleier-Smith, Andrew J Daley
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Enhanced Superexchange in a Tilted Mott Insulator.

Physical review letters 124:4 (2020) 043204

Authors:

Ivana Dimitrova, Niklas Jepsen, Anton Buyskikh, Araceli Venegas-Gomez, Jesse Amato-Grill, Andrew Daley, Wolfgang Ketterle

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.
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