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Quantum Simulation

Klein tunneling through an asymmetric barrier: Symmetric transmission and directional pair creation

arXiv

Authors: Andre G. Campos, Denys I. Bondar

Year

2026

Paper ID

74132

Status

Preprint

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~2 min

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Abstract

We prove that the transmission probability for the Klein tunneling through a spatially asymmetric barrier is the same for left and right incidence whenever each asymptotic lead carries a single propagating channel per direction. Time-dependent Wigner-function simulations confirm this and locate the missing directionality in the barrier's interior, where a sharp edge generates several times more under-barrier negative-energy population than a smooth one. Directional control in the Klein regime therefore resides in pair production rather than in the transmitted current.

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We prove that the transmission probability for the Klein tunneling through a spatially asymmetric barrier is the same for left and right incidence whenever each asymptotic lead...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2607.22337 [2] arXiv https://arxiv.org/abs/2607.22337 [3] Publisher https://arxiv.org/abs/2607.22337

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External citation index: OpenAlex citation signal • updated 2026-08-05 01:39:50

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