Entanglement dynamics of two Ising-coupled qubits with nonperpendicular local driving fields
Quantum Physics
2018-04-11 v2 Mesoscale and Nanoscale Physics
Abstract
We present an approximate analytical solution to the dynamic equation of two Ising-coupled qubits with oscillating classical control fields that are nonperpendicular to the static drift fields. This is a situation that has recently arisen in some solid-state experiments. With our solution we derive the analytical expressions for the local invariants as well as the local rotations needed to isolate a purely nonlocal gate. This determines the set of parameters that are required to generate any entangling gate. Moreover, we use our results to describe a recent experimental work on capacitively coupled singlet-triplet qubits in GaAs and discuss possible differences for a similar device in silicon.
Keywords
Cite
@article{arxiv.1709.03537,
title = {Entanglement dynamics of two Ising-coupled qubits with nonperpendicular local driving fields},
author = {F. A. Calderon-Vargas and J. P. Kestner},
journal= {arXiv preprint arXiv:1709.03537},
year = {2018}
}
Comments
6 pages, 3 figures