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Two simple schemes for implementing Toffoli gate via atom--cavity field interaction in cavity quantum electrodynamics |
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| Authors: | Shao Xiao-Qiang Chen Li and Zhang Shou |
| Institution: | Center for the Condensed-Matter Science and Technology, Harbin Institute of Technology, Harbin 150001, China; Center for the Condensed-Matter Science and Technology, Harbin Institute of Technology, Harbin 150001, China;Department of Physics, College of Science, Yanbian University, Yanji 133002, China; Department of Physics, College of Science, Yanbian University, Yanji 133002, China |
| Abstract: | This paper proposes two schemes for implementing three-qubit Toffoli gate with an atom (as target qubit) sent through a two-mode cavity (as control qubits). The first scheme is based on the large-detuning atom--cavity field interaction and the second scheme is based on the resonant atom-field interaction. Both the situations with and without cavity decay and atomic spontaneous emission are considered. The advantages and the experimental feasibility of these two schemes are discussed. |
| Keywords: | Toffoli gate cavity quantum electrodynamics |
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