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SYRY: Symposium Rydberg Physics in Single-Atom Trap Arrays
SYRY 3: Rydberg Physics in Single-Atom Trap Arrays 2
SYRY 3.5: Hauptvortrag
Mittwoch, 16. März 2022, 15:30–16:00, Audimax
Spin squeezing with finite range spin-exchange interactions — •Ana Maria Rey — JILA, NIST and University of Colorado at Boulder
Squeezed states represent one class of entangled states which are important in quantum sensing and metrology. Typically, squeezed states are be realized via collective all-to-all interactions. However, in many quantum systems the only accessible interactions have a finite range, prohibiting the realization of such collective models. In this talk I will report how the XXZ spin model with interactions that fall off with distance r as 1/rα in D=2 and 3 spatial dimensions or XX spin models with soft-core interactions can realize spin squeezing comparable to the infinite-range α=0 model in a broad range of parameter regimes. In particular, I will discuss the application of these ideas to the case of weakly-dressed Rydberg atoms where an external drive can be used to engineer XX soft-core interactions and in turn to generate large levels of spin squeezing even in the presence of experimentally unavoidable decoherence sources.