Solving the transport without transit quantum paradox of the spatial adiabatic passage technique

Details Solving the transport without transit quantum paradox of the spatial adiabatic passage technique Solving the transport without transit quantum paradox of the spatial adiabatic passage technique

2011-07-21

arxiv.org/abs/1107.4276v1

Physics

Quantum Physics

4 pages, 3 figures

Scientific paper

We discuss and solve the transport without transit quantum paradox recently introduced in the context of the adiabatic transport of a single particle or a Bose--Einstein condensate between the two extreme traps of a triple-well potential. To this aim, we address the corresponding quantum dynamics in terms of Bohmian trajectories and show that transport always implies transit through the middle well, in full agreement with the quantum continuity equation. This adiabatic quantum transport presents a very counterintuitive effect: by slowing down the total time duration of the transport process, ultra-high Bohmian velocities are achieved such that, in the limit of perfect adiabaticity, relativistic corrections are needed to properly address the transfer process while avoiding superluminal matter wave propagation.

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