Bloch-Zener oscillations in binary superlattices

Phys Rev Lett. 2009 Feb 20;102(7):076802. doi: 10.1103/PhysRevLett.102.076802. Epub 2009 Feb 19.


Bloch-Zener oscillations, i.e., the coherent superposition of Bloch oscillations and Zener tunneling between minibands of a binary lattice, are experimentally demonstrated for light waves in curved femtosecond laser-written waveguide arrays. Visualization of double-periodicity breathing and oscillation modes is reported, and synchronous tunneling leading to wave reconstruction is demonstrated.