Moire exciton polaritons in twisted photonic lattices at room temperature
Moire lattices attract intensive attention in the double graphene/TMD layers and photonic crystals due to the interesting exotic physics within these structures. However, precise measurement of the moir'e ground states, excited states and Bloch bands in the twisted photonic lattices is still il...
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Zusammenfassung: | Moire lattices attract intensive attention in the double graphene/TMD layers
and photonic crystals due to the interesting exotic physics within these
structures. However, precise measurement of the moir'e ground states, excited
states and Bloch bands in the twisted photonic lattices is still illusive. In
this work we report the strong coupling between the excitons of CsPbBr3
microplates and the photonic modes of the moire lattice at room temperature.
Depending on the coupling strength between the nearest potential sites, we
observe staggered moire polariton ground states, excited states trapped in the
potential sites and moire polariton bands across the twisted photonic lattice.
In addition, the phase locking of moire zero (stable in-phase) states and moire
pi (metastable antiphase) states with different spatial distributions are
measured. Moir'e polariton distribution can be tuned in the shape of
parallelogram by controlling the depth and width of the potential in one
photonic lattice with another one fixed. Our work lays the foundation to study
moir'e exciton polariton Wigner crystals and Luttinger liquid in twisted
photonic lattices at room temperature. |
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DOI: | 10.48550/arxiv.2408.02431 |