Extended Data Fig. 3: Band structure of the twisted-bilayer optical lattices.
From: Atomic Bose–Einstein condensate in twisted-bilayer optical lattices
The twist angle of the commensurate optical lattice is \(\theta =2\,\arctan \,(1/22)\), whose band structure is regarded as an approximation of the experimental case θ = 5.21°. a, b and c show the band structures for the interlayer coupling strength ΩR = 0Er, 0.1Er and 1Er respectively. a also gives the band structure without the interlayer coupling in the form of the superlattice minibands within the same reduced Brillouin zone. d,e and f are the enlargement of the lowest bands of a,b, and c, respectively. g,h and i are the further enlargement of the lowest bands of d,e and f, respectively. Here, the MW detuning is Δ = 0, V0= 4Er and E0 corresponds to the energy of the lowest band.
