Two-Qubit Quantum Logic Gate in Molecular Magnets
HOU Jing-Min1,2 , TIAN Li-Jun3 , GE Mo-Lin2
1 Department of Physics, Southeast University, Nanjing 210096
2 Theoretical Physics Division, Nankai Institute of Mathematics,Nankai University, Tianjin 300071
3 Department of Physics, Shanghai University, Shanghai 200436
Two-Qubit Quantum Logic Gate in Molecular Magnets
HOU Jing-Min1,2 ;TIAN Li-Jun3 ;GE Mo-Lin2
1 Department of Physics, Southeast University, Nanjing 210096
2 Theoretical Physics Division, Nankai Institute of Mathematics,Nankai University, Tianjin 300071
3 Department of Physics, Shanghai University, Shanghai 200436
关键词 ：
03.67.Lx ,
75.50.Xx ,
75.10.Jm
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
Key words ：
03.67.Lx
75.50.Xx
75.10.Jm
出版日期: 2005-09-01
:
03.67.Lx
(Quantum computation architectures and implementations)
75.50.Xx
(Molecular magnets)
75.10.Jm
(Quantized spin models, including quantum spin frustration)
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2005, Vol. 22 
