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Open Quantum Systems Decoherence

Communicating with a wave packet using quantum superarrival

arXiv
Authors: Dipankar Home, A. S. Majumdar, A. Matzkin

Year

2010

Paper ID

10613

Status

Preprint

Abstract Read

~2 min

Abstract Words

96

Citations

N/A

Abstract

An analytical treatment of a propagating wave packet incident on a transient barrier reveals a counterintuitive quantum mechanical effect in which, for a particular time interval, the time-varying transmission probability {\it exceeds} (`superarrival') that for the free propagation of the wave packet. It is found that the speed with which the information about the barrier perturbation propagates across the wave packet can exceed the group velocity of the wave packet. An interesting implication of this effect regarding information transfer is analyzed by showing one-to-one correspondence between the strength of the barrier and the magnitude of `superarrival'.

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  • An analytical treatment of a propagating wave packet incident on a transient barrier reveals a counterintuitive quantum mechanical effect in which, for a particular time...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1011.0273 [2] arXiv https://arxiv.org/abs/1011.0273 [3] Publisher https://arxiv.org/abs/1011.0273

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