Wave packet transmission of Bloch electron manipulated by magnetic field

Details Wave packet transmission of Bloch electron manipulated by magnetic field Wave packet transmission of Bloch electron manipulated by magnetic field

2005-05-23

arxiv.org/abs/quant-ph/0505169v2

Phys. Rev. A 73, 022317 (2006)

Physics

Quantum Physics

6 pages, 5 figures, new content added

Scientific paper

10.1103/PhysRevA.73.022317

We study the phenomenon of wave packet revivals of Bloch electrons and explore how to control them by a magnetic field for quantum information transfer. It is showed that the single electron system can be modulated into a linear dispersion regime by the "quantized" flux and then an electronic wave packet with the components localized in this regime can be transferred without spreading. This feature can be utilized to perform the high-fidelity transfer of quantum information encoded in the polarization of the spin. Beyond the linear approximation, the re-localization and self-interference occur as the novel phenomena of quantum coherence.

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