A Scheme of Conditional Quantum Phase Gate for Dissipative Cavity QED System
作者： Cai Jian-Wu , Fang Mao-Fa , Liao Xiang-Ping , Zheng Xiao-Juan
DOI: 10.1088/0253-6102/46/6/005
关键词: Quantum 、 Quantum mechanics 、 Single-mode optical fiber 、 Atom 、 Dissipative system 、 Fock space 、 Quantum information 、 Physics 、 Cascade 、 Metastability
摘要: We propose a scheme to implement two-qubit conditional quantum phase gate via single mode cavity and cascade four-level atom assisted by classical laser. The information is encoded on the Fock states of two metastable ground atom. Even under condition systematic dissipations, this can also be realized with fidelity 98.6% success probability 0.767.
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Wang Xiang-Bin, Matsumoto Keiji, Erratum: Nonadiabatic Conditional Geometric Phase Shift with NMR [Phys. Rev. Lett. 87, 097901 (2001)] Physical Review Letters. ,vol. 88, pp. 179901- ,(2002) , 10.1103/PHYSREVLETT.88.179901
A. P. Lund, T. C. Ralph, Coherent-state linear optical quantum computing gates using simplified diagonal superposition resource states Physical Review A. ,vol. 71, pp. 032305-1- 032305-9 ,(2005) , 10.1103/PHYSREVA.71.032305
Kae Nemoto, W. J. Munro, Nearly deterministic linear optical controlled-NOT gate. Physical Review Letters. ,vol. 93, pp. 250502- 250502 ,(2004) , 10.1103/PHYSREVLETT.93.250502
Ying Wu, Xiaoxue Yang, Effective two-level model for a three-level atom in the Ξ configuration Physical Review A. ,vol. 56, pp. 2443- 2446 ,(1997) , 10.1103/PHYSREVA.56.2443
Shi-Biao Zheng, Guang-Can Guo, Efficient scheme for two-atom entanglement and quantum information processing in cavity QED Physical Review Letters. ,vol. 85, pp. 2392- 2395 ,(2000) , 10.1103/PHYSREVLETT.85.2392
Paul G. Kwiat, Edo Waks, Andrew G. White, Ian Appelbaum, Philippe H. Eberhard, Ultra-bright source of polarization-entangled photons Physical Review A. ,vol. 60, ,(2000) , 10.1103/PHYSREVA.60.R773
K. J. Resch, J. S. Lundeen, A. M. Steinberg, Quantum state preparation and conditional coherence. Physical Review Letters. ,vol. 88, pp. 113601- ,(2002) , 10.1103/PHYSREVLETT.88.113601
XuBo Zou, W. Mathis, Conditional quantum phase gate using distant atoms and linear optics Physical Review A. ,vol. 71, pp. 042334- ,(2005) , 10.1103/PHYSREVA.71.042334
I. A. Grigorenko, D. V. Khveshchenko, Single-Step Implementation of Universal Quantum Gates Physical Review Letters. ,vol. 95, pp. 110501- 110501 ,(2005) , 10.1103/PHYSREVLETT.95.110501
M. Suhail Zubairy, Moochan Kim, Marlan O. Scully, Cavity-QED-based quantum phase gate Physical Review A. ,vol. 68, pp. 033820- ,(2003) , 10.1103/PHYSREVA.68.033820