The controlled-NOT gate and controlled square-root NOT gate play an important role in quantum algorithm. This article reports the experimental results of these two universal quantum logic gates (controlled square-root NOT gate and controlled-NOT gate) on a 7-qubit NMR quantum computer. Further, we propose a simple experimental method to measure and correct the error in the controlled phase-shift gate, which is helpful to construct a more perfect phase-shift gate experimentally and can also be used in more qubits discrete Fourier transformation.
@article{arxiv.quant-ph/0109002,
title = {Experimental realization of 7-qubit universal perfect controlled-NOT and controlled square-root NOT gates},
author = {Daxiu Wei and Xiaodong Yang and Jun Luo and Xianping Sun and Xizhi Zeng and Maili Liu and Shangwu Ding},
journal= {arXiv preprint arXiv:quant-ph/0109002},
year = {2007}
}
Comments
4 pages, RevTeX, 3 separate PostScript figures, corrected some typos