Topological Swing of Bloch Oscillations in Quantum Walks
Topological Swing of Bloch Oscillations in Quantum Walks
We report new oscillations of wave packets in quantum walks subjected to electric fields, that decorate the usual Bloch-Zener oscillations of insulators. The number of turning points (or suboscillations) within one Bloch period of these oscillations is found to be governed by the winding of the quasienergy spectrum. Thus, this …