Nuclear magnetic resonance implementation of universal quantum gate with constant Hamiltonian evolution
Wenzhang Liu, Jingfu Zhang, Ye Cao, Wen Yi Huo, Liang Hao, Gui Lu Long, Zhiwei Deng · Applied Physics Letters · 2009
In this letter, we report an experimental demonstration of single-step realization of universal quantum gate in a nuclear magnetic resonance quantum information processor. The scheme uses a constant Hamiltonian evolution and is robust against decoherence. Our work focuses on the implementation of the controlled-NOT gate. Several sets of parameters are obtained and they provide flexibility to suppress decoherence for quantum computation.