Abstract

We study controllable Bloch oscillation and its potential applications in a one-dimensional lattice with partly phase-modulated hopping rates. Under proper conditions, such a system can be built by using a quasi-one-dimensional sawtooth lattice with Peierls phases induced by a synthetic magnetic field. The amplitude of the Bloch oscillation can be adjusted precisely and continuously by adjusting the phase, and hence we realize tunable light splitting in the presence of a V-type potential. Moreover, we construct two distinct sandwich structures to realize tunable light stopping and delayed splitting, respectively, of which the stopping and delay durations are tunable. Our proposal may imply exciting opportunities for potential applications in optical communications and photonic device fabrication involving unconventional light transports.

© 2020 Optical Society of America

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