| Original Articles |
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One-Step Implementation of Mulitqubit Quantum Phase Gate in a Cavity QED System |
| FAN Qiu-Bo |
| College of Mathematics and Physics, Xuzhou Institute of Technology, Xuzhou 221008 |
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| Cite this article: |
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FAN Qiu-Bo 2008 Chin. Phys. Lett. 25 379-382 |
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Abstract An alternative protocol is proposed to implement three-qubit phase gate
between photon and atoms in a high-Q bimodel optical cavity. The idea can be extended to directly implement N-qubit phase gate, and the gating time that is required to implement the protocol does not rise with increasing number of qubits. The influence of cavity decay and atomic spontaneous emission on the gate fidelity is also discussed.
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| Keywords:
03.67.Hk
03.65.Ud
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Received: 08 October 2007
Published: 30 January 2008
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| PACS: |
03.67.Hk
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(Quantum communication)
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03.65.Ud
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(Entanglement and quantum nonlocality)
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