Long distance tunneling

Details Long distance tunneling Long distance tunneling

2005-04-27

arxiv.org/abs/quant-ph/0504206v1

Physics

Quantum Physics

6 figures

Scientific paper

Quantum tunneling between two potential wells in a magnetic field can be strongly increased when the potential barrier varies in the direction perpendicular to the line connecting the two wells and remains constant along this line. A periodic structure of the wave function is formed in the direction joining the wells. The resulting motion can be coherent like motion in a conventional narrow band periodic structure. A particle penetrates the barrier over a long distance which strongly contrasts to WKB-like tunneling. The whole problem is stationary. The coherent process can be influenced by dissipation.

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