Minimal and Robust Composite Two-Qubit Gates with Ising-Type Interaction
Quantum Physics
2013-02-20 v5
Abstract
We construct a minimal robust controlled-NOT gate with an Ising-type interaction by which elementary two-qubit gates are implemented. It is robust against inaccuracy of the coupling strength and the obtained quantum circuits are constructed with the minimal number (N=3) of elementary two-qubit gates and several one-qubit gates. It is noteworthy that all the robust circuits can be mapped to one-qubit circuits robust against a pulse length error. We also prove that a minimal robust SWAP gate cannot be constructed with N=3, but requires N=6 elementary two-qubit gates.
Cite
@article{arxiv.1204.2750,
title = {Minimal and Robust Composite Two-Qubit Gates with Ising-Type Interaction},
author = {Tsubasa Ichikawa and Utkan Güngördü and Masamitsu Bando and Yasushi Kondo and Mikio Nakahara},
journal= {arXiv preprint arXiv:1204.2750},
year = {2013}
}
Comments
7 pages, 2 figures