Journal
PHYSICAL REVIEW LETTERS
Volume 124, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.124.043204
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Funding
- NSF through the Center for Ultracold Atoms
- NSF [1506369]
- ARO-MURI Non-Equilibrium Many-Body Dynamics [W911NF-14-1-0003]
- AFOSR-MURI Quantum Phases of Matter [FA9550-14-1-0035]
- ONR [N00014-17-1-2253]
- Vannevar-Bush Faculty Fellowship
- National Science Foundation [PHY-1607611]
- EPSRC Programme [DesOEQ(EP/P009565/1)]
- European Office of Aerospace Research and Development via AFOSR [FA9550-18-1-0064]
- EPSRC [EP/K000586/1]
- EPSRC [EP/K000586/1] Funding Source: UKRI
- Division Of Physics
- Direct For Mathematical & Physical Scien [1506369] Funding Source: National Science Foundation
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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 till In a tilted lattice, defects are immobile and pure spin dynamics can be studied.
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