Super Bloch Oscillation in a PT symmetric system
classification
⚛️ physics.optics
quant-ph
keywords
oscillationsystemblochsymmetricamplifiedamplitudebindingcertain
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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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