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
February 2009
Applied Physics Letters;2/9/2009, Vol. 94 Issue 6, pN.PAG
Academic Journal
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.


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