Experimental realization of 7-qubit universal perfect controlled-NOT and controlled square-root NOT gates
Daxiu Wei, Xiaodong Yang, Jun Luo, Xianping Sun, Xizhi Zeng, Maili Liu, Shangwu Ding
Abstract
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.
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