arXiv:quant-ph/0312180 · Chinese Physics Letters

Two-Qubit Quantum Logic Gate in Molecular Magnets

Jing-Min Hou, Li-Jun Tian, Mo‐Lin Ge

Published Aug 25, 2005• 7 citations

Abstract

We propose a scheme to realize a controlled-NOT quantum logic gate in a dimer of exchange coupled single-molecule magnets, [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 a pair of the four quantum computing bases and between the quantum computing bases and excited states are evaluated and analysed.

DOI: 10.1088/0256-307x/22/9/002

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