Studying many-body physics models with engineered spins in a trapped ion platform*

Quantum simulation of complex physics models using present-day quantum technologies is an exciting area of research. To this end, a controlled quantum system, where the interactions are

engineered with electromagnetic fields, is used to simulate another potentially intractable quantum system. Trapped ions are one of the favorite platforms for performing quantum computation and simulation, particularly due to their long coherence time, good connectivity, and individual control/readout capabilities. In this presentation, I will show some recent results of quantum spin

models simulated using long ion strings. We utilize a string of up to 51 ions with individual qubit control and readout to generate intriguing many-body states and explore their applications in

quantum sensing [1]. Additionally, our device enables us to simulate spin propagation and unveil emergent hydrodynamics with a spin chain [2]. I will also present results on large-scale entanglement characterization in experimental settings [3] and out-of-equilibrium dynamics in a quantum spin chain [4].

[1] J. F. Franke, et al., Nature 621, 740 (2023).

[2] M. K. Joshi, et al, Science 376, 720 (2022).

[3] M. K. Joshi, C. Kokail, R. v Bijnen, et al., Nature 624, 539 (2023).

[4] L. K. Joshi, et al., arXiv:2401.04270 (2024).