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Realizing and Probing Baryonic Excitations in Rydberg Atom Arrays | | Fangli Liu
; Seth Whitsitt
; Przemyslaw Bienias
; Rex Lundgren
; Alexey V. Gorshkov
; | | Date: |
14 Jul 2020 | | Abstract: | We propose a realization of mesonic and baryonic quasiparticle excitations in
Rydberg atom arrays with programmable interactions. Recent experiments have
shown that such systems possess a $mathbb{Z}_3$-ordered crystalline phase
whose low-energy quasiparticles are defects in the crystalline order. By
engineering a $mathbb{Z}_3$-translational-symmetry breaking field on top of
the Rydberg-blockaded Hamiltonian, we show that different types of defects
experience confinement, and as a consequence form mesonic or baryonic
quasiparticle excitations. We illustrate the formation of these quasiparticles
by studying a quantum chiral clock model related to the Rydberg Hamiltonian. We
then propose an experimental protocol involving out-of-equilibrium dynamics to
directly probe the spectrum of the confined excitations. We show that the
confined quasiparticle spectrum can limit quantum information spreading in this
system. This proposal is readily applicable to current Rydberg experiments, and
the method can be easily generalized to more complex confined excitations (e.g.
’tetraquarks’, ’pentaquarks’) in phases with $mathbb{Z}_q$ order for $q>3$. | | Source: | arXiv, 2007.7258 | | Services: | Forum | Review | PDF | Favorites | |
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