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arXiv · 1809.08952

Qubit gates with simultaneous transport in double quantum dots

Yi-Chao Li·Xi Chen·J. G. Muga·E. Ya. Sherman
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Abstract

A single electron spin in a double quantum dot in a magnetic field is considered in terms of a four-level system. By describing the electron motion between the potential minima by spin-conserving tunneling and spin flip caused by a spin-orbit coupling, we inversely engineer faster-than-adiabatic state manipulation operations based on the geometry of four-dimensional (4D) rotations. In particular, we show how to transport a qubit among the quantum dots performing simultaneously a required spin rotation.

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Yi-Chao Li, Xi Chen, J. G. Muga, E. Ya. Sherman. 2018-09-24. Qubit gates with simultaneous transport in double quantum dots. https://doi.org/10.1088/1367-2630/aaedd9

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