Spin-models, dynamics and criticality with atoms in tilted optical superlattices
Abstract
We show that atoms in tilted optical superlattices provide a platform for exploring coupled spin chains of forms that are not present in other systems. In particular, using a period-2 superlattice in one dimension, we show that coupled Ising spin chains with XZ and ZZ spin coupling terms can be engineered. We use optimized tensor network techniques to explore the criticality and nonequilibrium dynamics in these models, finding a tricritical Ising point in regimes that are accessible in current experiments. These setups are ideal for studying low-entropy physics, as initial entropy is “frozen-out” in realizing the spin models, and provide an example of the complex critical behavior that can arise from interaction-projected models.
Citation
Buyskikh , A S , Tagliacozzo , L , Schuricht , D , Hooley , C A , Pekker , D & Daley , A J 2019 , ' Spin-models, dynamics and criticality with atoms in tilted optical superlattices ' , Physical Review Letters , vol. 123 , no. 9 , 090401 , pp. 1-6 . https://doi.org/10.1103/PhysRevLett.123.090401
Publication
Physical Review Letters
Status
Peer reviewed
ISSN
0031-9007Type
Journal article
Rights
Copyright © 2019 American Physical Society. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the final published version of the work, which was originally published at https://doi.org/10.1103/PhysRevLett.123.090401
Description
Funding: Strathclyde: UK EPSRC Programme Grant DesOEQ (EP/P009565/1), the European Union Horizon 2020 collaborative project QuProCS — QuantumProbes for Complex Systems (Grant Agreement No. 641277), and by the EOARD via AFOSR Grant No. FA9550-18-1-0064.Collections
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