A trajectory-based understanding of quantum interference

Details A trajectory-based understanding of quantum interference A trajectory-based understanding of quantum interference

2008-06-12

arxiv.org/abs/0806.2105v2

J. Phys. A: Math. Gen. 41, 435303 (2008)

Physics

Quantum Physics

27 pages, 12 figures (shortened version)

Scientific paper

10.1088/1751-8113/41/43/435303

Interference is one of the most fundamental features which characterizes quantum systems. Here we provide an exhaustive analysis of the interfere dynamics associated with wave-packet superpositions from both the standard quantum-mechanical perspective and the Bohmian one. From this analysis, clear and insightful pictures of the physics involved in this kind of processes are obtained, which are of general validity (i.e., regardless of the type of wave packets considered) in the understanding of more complex cases where interference is crucial (e.g., scattering problems, slit diffraction, quantum control scenarios or, even, multipartite interactions). In particular, we show how problems involving wave-packet interference can be mapped onto problems of wave packets scattered off potential barriers.

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