scholarly journals Hofstadter butterfly in a cavity-induced dynamic synthetic magnetic field

2019 ◽  
Vol 100 (22) ◽  
Author(s):  
Elvia Colella ◽  
Farokh Mivehvar ◽  
Francesco Piazza ◽  
Helmut Ritsch
Keyword(s):  
Magnetic Field ◽  
Hofstadter Butterfly ◽  
Synthetic Magnetic Field

scholarly journals Direct observation of photonic Landau levels and helical edge states in strained honeycomb lattices

2020 ◽  
Vol 9 (1) ◽  
Author(s):  
Omar Jamadi ◽  
Elena Rozas ◽  
Grazia Salerno ◽  
Marijana Milićević ◽  
Tomoki Ozawa ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Symmetry Breaking ◽  
Distinctive Feature ◽  
Direct Evidence ◽  
Landau Levels ◽  
Honeycomb Lattice ◽  
Edge States ◽  
Photonic Lattices ◽  
Synthetic Magnetic Field

Abstract We report the realization of a synthetic magnetic field for photons and polaritons in a honeycomb lattice of coupled semiconductor micropillars. A strong synthetic field is induced in both the s and p orbital bands by engineering a uniaxial hopping gradient in the lattice, giving rise to the formation of Landau levels at the Dirac points. We provide direct evidence of the sublattice symmetry breaking of the lowest-order Landau level wavefunction, a distinctive feature of synthetic magnetic fields. Our realization implements helical edge states in the gap between n = 0 and n = ±1 Landau levels, experimentally demonstrating a novel way of engineering propagating edge states in photonic lattices. In light of recent advances in the enhancement of polariton–polariton nonlinearities, the Landau levels reported here are promising for the study of the interplay between pseudomagnetism and interactions in a photonic system.

scholarly journals Observation of Dirac monopoles in a synthetic magnetic field

Nature ◽  
2014 ◽  
Vol 505 (7485) ◽  
pp. 657-660 ◽  
Author(s):  
M. W. Ray ◽  
E. Ruokokoski ◽  
S. Kandel ◽  
M. Möttönen ◽  
D. S. Hall
Keyword(s):  
Magnetic Field ◽  
Synthetic Magnetic Field
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