Bloch-Zener dynamics in binary waveguide arrays

This study presents a binary superlattice system, which consists of two quantum wells in the unit cell. The analogy of quantum mechanics and optics is utilized to map the time coordinate onto space, which enables convenient access to the spatial evolution. This binary waveguide array displays the Bloch-Zener dynamics and tunneling between the subbbands of the system. These structures are fabricated using the femtosecond laser waveguide writing and the system dynamics is visualized using the recently developed fluorescence microscopy. Finally, a highly dispersive beamsplitter is proposed as a possible application of this experiment.