保真度是量子光学和信息光学中的一个重要概念,保真度的研究对量子通信和量子计算领域的发展有重要意义.运用全量子理论研究了考虑斯塔克位移的简并拉曼耦合模型中,斯塔克参数和平均光子数对量子态保真度和保真度振幅的影响,并对这种影响做出解释.结果表明,斯塔克常数越小,原子和光场的关联就越弱,系统、光场和原子的保真度就越大;平均光子数越大,原子和光场的相互作用就越强,系统和原子的保真度就越小.
参考文献
| [1] | Schumacher B. Quantum coding [J]. Phys. Rev. A, 1995, 51(4): 2738-2747. |
| [2] | Schumacher B. Sending entangement through noisy quantum channels [J]. Phys. Rev. A, 1996, 54(4): 2614-2628. |
| [3] | Schumacher B, NielsenM A. Quantum data processing and error correction [J]. Phys. Rev. A, 1996, 54(4):2629-2635. |
| [4] | Joasa R. Fidelity for mixes quantum states [J]. J. Mod. Opt., 1994, 41(12): 2315-2323. |
| [5] | Wang Xiangbin, Oh C H, Kwek L C. Dures fidelity of displaced squeezed thermal states [J]. Phys. Rev. A, 1998,58(5): 4186-4190. |
| [6] | Duan Luming, Guo Guangcan. Perturbative expansions for the fidelities and spatially correlated dissipation of quantum bits [J]. Phys. Rev. A, 1997, 56(6): 4466-4470. |
| [7] | Horodecki R, Horodecki M. Information theoretic aspects of inseparability of mixed states [J]. Phys. Rev. A,1996, 54(3): 1838-1843. |
| [8] | Guo Guangcan. Quantum information optics [J]. Physics (物理), 1996, 25(6): 336-342 (in Chinese). |
| [9] | Agarwal G S. Field-correlation effects is multiphoton absorption process [J]. Phys. Rev. A, 1970, A1(5): 1445-1459. |
| [10] | Phoenix S J D, Knight P L. Periodicity, phase and entropy in modes of two-photon reasonance [J]. J. Opt. Soc.Am. B, 1990, B7(1): 116-124. |
| [11] | Xu Lei, Zhang Zhiming. Modified effecitive Hamiltonian for degenerate Raman process [J]. Z. Phys. B, 1994,B95(2): 507-510. |
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