Illustration from Scientific Research

Schematic of the dynamical optical superlattice setup. The interfering lattice (yellow) is imbalanced along the x direction, leading to a movement of the ‘long’ lattice with respect to the ‘short’ lattice (non-interfering, red arrows) when ramping the phase φ of incoming light. The running-wave component is due to a rotated polarization of the retro-reflected laser beam ( λ /4 waveplate). The standing wave in the y direction is not shown for clarity. Here d = λ = 1,064 nm is the size of one unit cell.

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