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Condensed Matter Journal Club: Prethermal SPT phases and discrete time quasicrystals in a Rydberg array

Event Type
Seminar/Symposium
Sponsor
Condensed Matter Journal Club
Location
Loomis 222
Date
Oct 30, 2024   3:00 pm  
Speaker
Rishi Lohar (UIUC)
Contact
Amanda Gatto Lamas
E-Mail
amandag6@illinois.edu
Views
11
Originating Calendar
Physics - Condensed Matter Journal Club

The laboratory preparation of exotic quantum phases is a rapidly developing field with applications to quantum computing, simulation, and sensing. In this work, we discuss a proposal to program a neutral-atom quantum simulator to realize a prethermal symmetry-protected topological (SPT) state protected by multiple time-translation symmetries. We leverage recent advances in the study of prethermalization of quantum spin systems under strong, high-frequency quasiperiodic driving to engineer dynamics. Through numerical simulations, we study the low temperature phase diagram of our model and implement time-dependent ramps of system parameters to demonstrate that the SPT phase can be prepared adiabatically. Importantly, the experimental techniques required to implement our proposal are already well-developed, making this scheme experimentally accessible. We also highlight extensions of this model as a route to experimentally realize two-dimensional Kitaev topological order exhibited by spin-liquid states. This talk will primarily focus on the concept of prethermalization in (quasi)-periodically driven systems with some discussion of routes to experimental implementation.

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