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Fractional Quantum Anomalous Hall Phase for Raman Superarray of Rydberg Atoms

Rydberg atom arrays offer promising platforms for quantum simulation of correlated quantum matter and raise great interests. This work proposes a novel stripe‐lattice model with “Raman superarray of Rydberg atoms” to realize bosonic fractional quantum anomalous Hall (FQAH) phase. Two types of Rydber...

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Bibliographic Details
Published in:Advanced quantum technologies (Online) 2024-05, Vol.7 (5), p.n/a
Main Authors: Poon, Ting Fung Jeffrey, Zhou, Xin‐Chi, Wang, Bao‐Zong, Yang, Tian‐Hua, Liu, Xiong‐Jun
Format: Article
Language:English
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Summary:Rydberg atom arrays offer promising platforms for quantum simulation of correlated quantum matter and raise great interests. This work proposes a novel stripe‐lattice model with “Raman superarray of Rydberg atoms” to realize bosonic fractional quantum anomalous Hall (FQAH) phase. Two types of Rydberg states, arranged in a supperarray configuration and with Raman‐assisted dipole‐exchange couplings, are implemented to realize a minimal QAH model for hard‐core bosons populated into a topological flat band with large bulk gap under proper tunable experimental condition. With this the bosonic FQAH phase can be further achieved and probed feasibly. In particular, a novel quench protocol is proposed to probe the fractionalized excitations by measuring the correlated quench dynamics featured by fractional charge tunneling between bulk and chiral edge modes in the open boundary. This work proposes a novel correlated stripe‐lattice model through Raman superarray of Rydberg atoms, with which topological flat band and bosonic FQAH phase is realized. A quench protocol is also proposed to measure fractional excitations in the bulk and edge. This work may solve difficulties in exploring the phase, and has potential to be applied other strongly correlated topological states.
ISSN:2511-9044
2511-9044
DOI:10.1002/qute.202300356