NPS态光场与运动二能级原子相互作用系统的保真度

利用全量子理论计算方法，研究NPS态光场与运动二能级原子相互作用系统和光场保真度的时间演化规律，分析原子初态、最大光子数、光场参量、原子运动速度、场模结构参量和跃迁光子数对系统和光场保真度的影响.结果表明：最大光子数越大或光场参量越小，保真度平均值越低；原子运动速度或场模结构参量增大保真度变大，振荡频率加快；跃迁光子数增大时，保真度周期性或无规则振荡；当原子初态处于叠加态时系统和光场保真度最大，且振荡规律相同.

Abstract

The fidelity in a system composed of a moving two-level atom interacting with an intermediate number-phase state was studied by means of the fully quantum theory. The influences of the atomic initial state, the largest number of photon, the parameter of light field, atomic motion, the parameter of field mode and the values of the transitional photon number on the fidelity of the system were analyzed. The result shows that the values of the average fidelity of system and light field decrease via increasing the largest number of photon or reducing the parameter of field. The larger atomic motion or field-mode structure parameter becomes, the greater values of the fidelity of system and light field are, and their oscillating frequencies are faster. As the transitional photon number is at different value, the evolutions for the fidelity of system and light field show periodic or random oscillation behavior. When atom is initially in a superposition state, the fidelity of system and field reaches its maximum, and the oscillating forms of the fidelity of system and field keep at a same manner.

参考文献

[1] 刘堂昆, 王继锁, 柳晓军, 等. 纠缠态原子与相干光场作用的量子信息保真度［J］. 光学学报, 2000, 20(11): 1449-1455.

LIU Tang-kun, WANG Ji-suo, LIU Xiao-jun.Fidelity of quantum information in a pair atoms of entanglement state interacting with coherent state［J］. Acta Optica Sinica, 2000, 20(11): 1449-1455.

[2] 刘堂昆, 王继锁, 柳晓军, 等. 纠缠态原子偶极间相互作用对量子态保真度的影响［J］. 物理学报, 2000, 49(04): 0708-0712.

LIU Tang-kun, WANG Ji-suo, LIU Xiao-jun, et al. Influence of entangled states of atomic dipole-dipole interaction on the fidelity of quantum states［J］. Acta Physica Sinica, 2000, 49(04): 0708-0712.

[3] 董传华. 在克尔媒质中原子和光场的量子信息保真度［J］. 光学学报, 2003, 23(10): 1181-1186.

DONG Chuan-hua. Fidelity of quantuminformation for atom field in Kerr medium［J］. Acta Optica Sinica, 2003, 23(10): 1181-1186.

[4] 王菊霞.多模光场与二能级原子相互作用系统中保真度与纠缠度的关联［J］. 光子学报, 2014, 43(03): 0327002.

WANG Ju-xia. Relevance between fidelity and degree of entanglement in the system of two-level atoms interacting with multi-mode fields［J］. Acta Photonica Sinica, 2014, 43(03): 0327002.

[5] 王菊霞.二能级原子与多模光场简并多光子共振相互作用系统中量子保真度的演化特性［J］. 物理学报, 2014, 63(18): 184203.

WANG Ju-xia. Evolution of the quantum fidelity in a system of multi-mode light field interacting resonantly with a two-level atom through degenerate multi-photon process［J］. Acta Physica Sinica, 2014, 63(18): 184203.

[6] ZANARDI P, LIDAR D A. Purity and state fidelity and quantum channels［J］. Physical Review A, 2004, 70(1): 012315.

[7] ISAR A. Quantum fidelity for Gaussian states describing the evolution of open systems［J］. European Physical Journal, 2008, 160:225-234.

[8] SOMMA R D, CHIAVERINI J. Lower bounds for the fidelity of entangled-state preparation［J］. Physical Review A, 2006, 74(5): 152302-8.

[9] PAUNKOVI C′, SACRAMENTO P D. Fidelity between partial states as a signature of quantum phase transitions［J］. Physical Review A, 2008, 77(5): 052302.

[10] 刘海燕, 王继锁，梁宝龙. 二项式光场与运动二能级原子相互作用系统的保真度［J］. 量子光学学报, 2011, 17(02): 96-100.

LIU Hai-yan, WANG Ji-suo, LIANG Bao-long. Fidelity of interacting system containing the binomial light field and a moving two-level atom［J］. Acta Sinica Quantum Optica, 2011, 17(02): 96-100.

[11] 张登玉, 高峰. 热辐射中存在偶极相互作用的原子量子态保真度研究［J］. 光子学报, 2008, 37(03): 600-603.

ZHANG Deng-feng, GAO Feng. Fidelity of a pair of atoms by dipole-dipole interaction quantum states in thermal radiation field［J］. Acta Photonica Sinica, 2008, 37(03): 600-603.

[12] 宫艳丽, 萨楚尔夫, 杨立森, 等. 原子玻色-爱因斯坦凝聚与二项式光场相互作用系统的保真度［J］. 量子电子学报, 2008, 25(05): 593-597.

GONG Yan-li, Sachuerfu, YANG Li-sen, et al. Fidelity of quantum state for interacting system of binomial photon field and atomic Bose-Einstein condensate［J］. Chinese Journal of Quantum Electronics, 2008, 25(05): 593-597.

[13] 王艳青, 萨楚尔夫, 王亚男. 多光子跃迁Pólya态光场与运动二能级原子相互作用系统的保真度［J］. 中国激光, 2015, 42(7): 0718001.

WANG Yan-qing, Sachuerfu, WANG Ya-nan. Fidelity in a system of a moving two-level atom interacting with Pólya state light for multi-photon transition［J］. Chinese Journal of Laser, 2015, 42(7): 0718001.

[14] 崔英华, 萨楚尔夫, 杨立森, 等. 内禀退相干下二项式光场与原子相互作用的熵演化［J］. 光子学报,2009, 38(04): 971-974.

CUI Ying-hua, Sachuerfu, YANG Li-sen, et al. The field entropy evolution of the binomial optical field interacting with the atom under intrinsic decoherece condition［J］. Acta Photonica Sinica, 2009, 38(04): 971-974.

[15] 哈日巴拉, 萨楚尔夫, 杨瑞芳, 等. 压缩相干态光场与Λ型三能级原子相互作用的纠缠特性［J］. 光子学报, 2009, 38(07): 1846-1851.

Haribala, Sachuerfu, YANG Rui-fang, et al. Quantum entanglement of the squeezed coherent state interacting with Λ-type three-level atom［J］. Acta Photonica Sinica, 2009, 38(07): 1846-1851.

[16] BASEIA B, DE LIMA A F, MARQUES G C. Intermediate number-phase state of the quantized radiation field［J］. Physical Letter A, 1995, 204: 1-6.

[17] PREGNELL K L, PEGG D T. Single-shot measurement of quantum optical phase［J］. Physical Review Letters, 2002, 89(17): 173601.

[18] Foundation item: The Natural Science Foundation of Inner Mongolia (No.2013MS0115); Tens-Hundreds-Thousands Talent Project Foundation of Inner Mongolia Normal University（No.RCPY-2-2012-K-038）

郭彩丽, 萨楚尔夫, 李斌. NPS态光场与运动二能级原子相互作用系统的保真度[J]. 光子学报, 2016, 45(3): 0327003. GUO Cai-li, Sachuerfu, LI Bin. Fidelity in a System of a Moving Two-level Atom Interacting with Intermediate Number-Phase State Light[J]. ACTA PHOTONICA SINICA, 2016, 45(3): 0327003.

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