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arxiv: 1605.03517 · v2 · pith:QZQY6UNCnew · submitted 2016-05-11 · ⚛️ physics.optics · quant-ph

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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