%A HOU Jing-Min, TIAN Li-Jun, GE Mo-Lin %T Two-Qubit Quantum Logic Gate in Molecular Magnets %0 Journal Article %D 2005 %J Chin. Phys. Lett. %R %P 2147-2150%V 22 %N 9 %U {https://cpl.iphy.ac.cn/CN/abstract/article_35105.shtml} %8 2005-09-01 %X We propose a scheme to realize a controlled-NOT quantum logic gate in a dimer of exchange coupled single-molecule magnets, [Mn4]2. We chosen the ground state and the three low-lying excited states of a dimer in a finite longitudinal magnetic field as the quantum computing bases and introduced a pulsed transverse magnetic field with a special frequency. The pulsed transverse magnetic field induces the transitions between the quantum computing bases so as to realize a controlled-NOT quantum logic gate. The transition rates between a pair of the four quantum computing bases and between the quantum computing bases
and excited states are evaluated and analysed.