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Super Bloch Oscillation in a PT symmetric system (1605.03517v2)

Published 11 May 2016 in physics.optics and quant-ph

Abstract: Wannier-Stark ladder in a PT symmetric system is generally complex that leads to amplified/damped Bloch oscillation. We show that a non-amplified wave packet oscillation with very large amplitude can be realized in a non-Hermitian tight binding lattice if certain conditions are satisfied. We show that pseudo PT symmetry guarantees the reality of the quasi energy spectrum in our system.

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