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Scheme for Implementing an N-Qubit Phase Gate via Selective Atom--Field Interaction with Cavity Quantum Electrodynamics |
SHAO Xiao-Qiang1;JIN Xing-Ri1;ZHU Ai-Dong1,2;ZHANG Shou1,2;YEON
Kyu-Hwang3 |
| 1Department of Physics, College of Science, Yanbian University, Yanji 133002 2Center for the Condensed-Matter Science and Technology, Harbin Institute of Technology, Harbin 1500013BK21 Program Physics & Department of Physics, College of Natural Science, Chungbuk National University, Cheonju, Chungbuk 361-763, Republic of Korea |
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| Cite this article: |
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SHAO Xiao-Qiang, JIN Xing-Ri, ZHU Ai-Dong et al 2008 Chin. Phys. Lett. 25 27-30 |
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Abstract A scheme for implementing a two-qubit phase gate with atoms sent through a high-Q optical cavity is proposed by choosing nonidentical coupling constants between the atoms and cavity. The atomic spontaneous emission can be suppressed due to the large atom--field detuning. Moreover, the scheme can be generalized to implement an N-qubit phase gate and the gating time
does not change with an increase of the number of qubits.
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| Keywords:
03.67.Lx
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Received: 30 August 2007
Published: 27 December 2007
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| PACS: |
03.67.Lx
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(Quantum computation architectures and implementations)
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42.50
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