| Original Articles |
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Modified Khaneja--Glaser Decomposition and Realization of Three-Qubit Quantum Gate |
| WEI Hai-Rui, DI Yao-Min, ZHANG-Jie |
| School of Physics and Electronic Engineering, Xuzhou Normal University, Xuzhou 221116 |
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| Cite this article: |
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WEI Hai-Rui, DI Yao-Min, ZHANG-Jie 2008 Chin. Phys. Lett. 25 3107-3110 |
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Abstract
Optimal implementation of quantum gates is crucial for realization of quantum computation. We slightly modify the Khaneja--Glaser decomposition (KGD) for n-qubits and give a new Cartan subalgbra in the second step of the decomposition. Based on this modified KGD, we investigate the realization of three-qubit logic gate and obtain the result that a general three-qubit quantum logic gate can be implemented using at most 73 one-qubit gates rotations with respect to the y and z axes and 26 CNOT gates.
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| Keywords:
03.65.Fd
03.67.Lx
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Received: 04 June 2008
Published: 29 August 2008
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| PACS: |
03.65.Fd
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(Algebraic methods)
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03.67.Lx
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(Quantum computation architectures and implementations)
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