Dark States and Coherent Control of Spin States in Molecular Magnets

Details Dark States and Coherent Control of Spin States in Molecular Magnets Dark States and Coherent Control of Spin States in Molecular Magnets

2006-04-07

arxiv.org/abs/cond-mat/0604189v1

Phys. Rev. B 73, 134425 (2006)

Physics

Condensed Matter

Materials Science

7 pages, 4 figures. To appear in Physical Review B

Scientific paper

10.1103/PhysRevB.73.134425

We propose a scheme to realize coherent control of spin states of molecule magnet, Ni$_4$. We introduce transverse magnetic fields with special frequencies. When the frequencies of transverse magnetic fields match in some conditions, we obtain dark states in Ni$_4$ molecules. Through adjusting the magnitude of magnetic fields, we can obtain any arbitrary superposition of the two ground spin states of Ni$_4$ molecules.

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