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Two-qubit Quantum Logic Gate in Molecular Magnets

Jing-Min Hou·Li-Jun Tian·Mo-lin Ge
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Abstract

We proposed a scheme to realize a controlled-NOT quantum logic gate in a dimer of exchange coupled single-molecule magnets, $[\textrm{Mn}_4]_2$. 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 the quantum computing bases and between the quantum computing bases and other excited states are evaluated and analyzed.

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Jing-Min Hou, Li-Jun Tian, Mo-lin Ge. 2003-12-21. Two-qubit Quantum Logic Gate in Molecular Magnets. https://doi.org/10.1088/0256-307x%2F22%2F9%2F002

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