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Emergent Haldane Model and Photon-Valley Locking in Chiral Cavities

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arxiv 2403.11063 v1 pith:UB55M5IK submitted 2024-03-17 cond-mat.mes-hall cond-mat.mtrl-scicond-mat.other

Liu Yang , Qing-Dong Jiang This is my paper · ORCID
classification cond-mat.mes-hallcond-mat.mtrl-scicond-mat.other
keywords modelachievingcavitieschiralgraphenehaldanelockingnumbers
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The realization of Haldane's topological graphene model in practical materials has presented significant challenges. Here, we propose achieving this model by embedding graphene in chiral cavities, using the asymptotically decoupled framework detailed in Ref. [Phys. Rev. Lett. 126, 153603 (2021)]. Additionally, we introduce an equilibrium strategy for achieving valley polarization in this system with C2-symmetry breaking. Through numerical methods, we quantify the locking of photon numbers with Bloch electrons and calculate the topology-induced imbalance of valley photons. Furthermore, we elucidate that topological phase transition is characterized by the sign change of photon numbers during interband excitation. These findings underscore the remarkable potential of utilizing cavity quantum fluctuations to engineer electronic and photonic properties specific to valleys and topologies, particularly within the realm of strong light-matter coupling.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Cavity-modified quantum electron transport in multi-terminal devices and interferometers

    cond-mat.mes-hall 2024-12 conditional novelty 6.0 of 10

    Cavity vacuum fields, acting through long-range electron hopping, can break integer quantum Hall quantization, suppress point-contact conductance plateaus, and modify Aharonov-Bohm interference visibility in multi-ter...

  2. Non-Hermitian wave-packet dynamics and its realization within a non-Hermitian chiral cavity

    cond-mat.mes-hall 2025-01 conditional novelty 5.0 of 10

    The paper derives and numerically tests semiclassical equations of motion for wave packets in non-Hermitian topological systems, where complex Berry curvature produces an anomalous force as well as an anomalous velocity.

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