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Two-Qubit Quantum Logic Gate in Molecular Magnets |
| HOU Jing-Min1,2;TIAN Li-Jun3;GE Mo-Lin2 |
| 1Department of Physics, Southeast University, Nanjing 210096
2Theoretical Physics Division, Nankai Institute of Mathematics,Nankai University, Tianjin 300071
3Department of Physics, Shanghai University, Shanghai 200436 |
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| Cite this article: |
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HOU Jing-Min, TIAN Li-Jun, GE Mo-Lin 2005 Chin. Phys. Lett. 22 2147-2150 |
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Abstract 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.
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| Keywords:
03.67.Lx
75.50.Xx
75.10.Jm
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Published: 01 September 2005
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| PACS: |
03.67.Lx
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(Quantum computation architectures and implementations)
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75.50.Xx
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(Molecular magnets)
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75.10.Jm
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(Quantized spin models, including quantum spin frustration)
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