An Error Model for the Cirac-Zoller CNOT gate
Abstract
In the framework of ion-trap quantum computing, we develop a characterization of experimentally realistic imperfections which may affect the Cirac-Zoller implementation of the CNOT gate. The CNOT operation is performed by applying a protocol of five laser pulses of appropriate frequency and polarization. The laser-pulse protocol exploits auxiliary levels, and its imperfect implementation leads to unitary as well as non-unitary errors affecting the CNOT operation. We provide a characterization of such imperfections, which are physically realistic and have never been considered before to the best of our knowledge. Our characterization shows that imperfect laser pulses unavoidably cause a leak of information from the states which alone should be transformed by the ideal gate, into the ancillary states exploited by the experimental implementation.
Cite
@article{arxiv.0909.3783,
title = {An Error Model for the Cirac-Zoller CNOT gate},
author = {Sara Felloni and Giuliano Strini},
journal= {arXiv preprint arXiv:0909.3783},
year = {2015}
}
Comments
10 pages, 1 figure. Accepted as a contributed oral communication in the QuantumComm 2009 International Conference on Quantum Communication and Quantum Networking, Vico Equense, Italy, October 26-30, 2009