Related papers: Counter-diabatic driving for fast spin control in a two-electron double quantum dot

Counter-diabatic driving for fast spin control in a two-electron double quantum dot

URL: http://arxiv.org/abs/2601.06988v1
Date: Sun, 11 Jan 2026 16:48:46 GMT
Title: Counter-diabatic driving for fast spin control in a two-electron double quantum dot
Authors: Yue Ban, Xi Chen,
Abstract summary: We study the counter-diabatic driving for fast adiabatic spin manipulation in a two-electron double quantum dot.<n>To simplify implementation and find an alternative shortcut, we transform the Hamiltonian in term of Lie algebra.
Score: 3.6098814955098177
License: http://creativecommons.org/licenses/by/4.0/
Abstract: The techniques of shortcuts to adiabaticity have been proposed to accelerate the "slow" adiabatic processes in various quantum systems with the applications in quantum information processing. In this paper, we study the counter-diabatic driving for fast adiabatic spin manipulation in a two-electron double quantum dot by designing time-dependent electric fields in the presence of spin-orbit coupling. To simplify implementation and find an alternative shortcut, we further transform the Hamiltonian in term of Lie algebra, which allows one to use a single Cartesian component of electric fields. In addition, the relation between energy and time is quantified to show the lower bound for the operation time when the maximum amplitude of electric fields is given. Finally, the fidelity is discussed with respect to noise and systematic errors, which demonstrates that the decoherence effect induced by stochastic environment can be avoided in speeded-up adiabatic control.

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