Optimal Control of Majorana Zero Modes
Mesoscale and Nanoscale Physics
2015-05-18 v2 Superconductivity
Quantum Physics
Abstract
Braiding of Majorana zero modes provides a promising platform for quantum information processing, which is topologically protected against errors. Strictly speaking, however, the scheme relies on infinite braiding times as it utilizes the adiabatic limit. Here we show how to minimize nonadiabatic errors for finite braiding times by finding an optimal protocol for the Majorana movement. Interestingly, these protocols are characterized by sharp transitions between Majorana motion at maximal and minimal velocities. We find that these so-called bang-bang protocols can minimize the nonadiabatic transitions of the system by orders of magnitude in comparison with naive protocols.
Keywords
Cite
@article{arxiv.1412.5603,
title = {Optimal Control of Majorana Zero Modes},
author = {Torsten Karzig and Armin Rahmani and Felix von Oppen and Gil Refael},
journal= {arXiv preprint arXiv:1412.5603},
year = {2015}
}
Comments
5 pages, 4 figures, 4 pages of supplemental material