Kavli Affiliate: Andrei Faraon
| First 5 Authors: Mi Lei, Rikuto Fukumori, Chun-Ju Wu, Edwin Barnes, Sophia Economou
| Summary:
Studying and controlling quantum many-body interactions is fundamentally
important for quantum science and related emerging technologies. Optically
addressable solid-state spins offer a promising platform for exploring various
quantum many-body phenomena due to their scalability to a large Hilbert space.
However, it is often challenging to probe many-body dynamics in solid-state
spin systems due to large on-site disorder and undesired coupling to the
environment. Here, we investigate an optically addressable solid-state spin
system comprising a strongly interacting ensemble of millions of ytterbium-171
ions in a crystal. Notably, this platform features a clock transition that
gives rise to pure long-range spin-exchange interactions, termed the dipolar XY
model. Leveraging this unique feature, we investigate quantum thermalization by
varying the relative ratio of interaction strength to disorder, dynamically
engineering the XY model into other many-body Hamiltonian models, and realizing
a time-crystalline phase of matter through periodic driving. Our findings
indicate that an ensemble of rare-earth ions serves as a versatile testbed for
many-body physics and offers valuable insights for advancing quantum
technologies.
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