量子电子学报, 2017, 34 (4): 473, 网络出版: 2017-08-09  

双势阱中原子质心运动对自发辐射的抑制

Suppression of spontaneous emission induced by atomic mass centre moving in double-well potential
作者单位
大连工业大学信息科学与工程学院, 辽宁 大连 116034
摘要
研究了一个囚禁于对称双势阱中的二能级原子与单模腔场的相互作用。 通过求解薛定谔方程,给出了整个系统波函数解析解和原子能级粒子数反转的解析表达式。 分析了当腔场初始态分别为粒子数态、相干态以及热态时原子粒子数反转随时间的演化情况, 并考虑了原子质心运动对粒子数反转的影响。结果表明通过选择合适的腔场初始态、势阱位 置及相关因素,可以有效地控制原子的自发辐射率。
Abstract
The interaction between a two-level atom trapped in symmetric double-well potential and a single mode cavity field is investigated. By solving Schrdinger equation, the analytical expressions of the total wave function and inversion of the atomic energy level for the whole system are given. Time evolution of the atomic population inversion is analyzed for different initial states of the cavity field, such as particle number, coherent and thermal states. Influence of atomic mass centre motion on population inversion is considered. Results show that by choosing appropriate cavity field initial state, potential well location and related factors, the spontaneous emission rate of an atom can be effectively controlled.
参考文献

[1] Zhang Duo. Quantum Manipulation of Spontaneous Emission and Optical Bistability in Coherent Media (相干介质中 自发辐射及光学双稳态的量子调控)[D]. Wuhan: Doctorial Dissertation of Huazhong University of Science and Technology, 2013 (in Chinese).

[2] Yzombard P, Hamamda M, Gerber S, et al . Laser cooling of molecular anions[J]. Physical Review Letters , 2015, 114(21): 213001.

[3] Mckay D, Ray U, et al . Metastable Bose-Einstein condensation in a strongly correlated optical lattice[J]. Physical Review A , 2015, 91(2): 023625.

[4] Chen Xuzong, Zhou Xiaoji. Quamtum manipulation of Bose-Einstein condensation[J]. Chinese Journal of Quantum Electronics (量子电子学报), 2014, 31(4): 433-441 (in Chinese).

[5] Li Songsong. Spin squeezing in spinor Bose-Einstein condensate[J]. Chinese Journal of Quantum Electronics (量子电子学报), 2015, 32(5): 568-572 (in Chinese).

[6] Ding Zhiyong, He Juan, Wu Tao. Implementing W state of remote atoms trapped in separated cavities[J]. Chinese Journal of Quantum Electronics (量子电子学报), 2013, 30(2): 192-197 (in Chinese).

[7] Song Congxi, Liu Nianhua. Control of spontaneous emission of a four-level atom by a microwave field with lower frequency[J]. Acta Sinica Quantum Optica (量子光学学报), 2010, 1(4): 252-258 (in Chinese).

[8] Martin J, Braun D. Coherent control of atomic tunneling[J]. Journal of Physics B Atomic Molecular Physics , 2007, 41(11): 5502-5507.

[9] Cao Hui, Zhao Qing. Correlated tunneling of cold atoms in double-well potential[J]. Acta Physica Sinica , 2010, 59(4): 2187-2192.

[10] Zheng Li, Wang Yongliang, Wang Zhen, et al . Effect of moving mass center on atomic transition probability in a single-mode cavity[J]. International Journal of Theoretical Physics , 2014, 53(3): 985-992.

[11] Antunes N D, Lombardo F C, Monteoliva D, et al . Decoherence, tunneling and noise-activation in a double-potential well at high and zero temperature[J]. Phys. Rev. E , 2005, 73(6): 95-104.

[12] Zheng Li, Xiao Zhihong, et al . Decoherence of quantum tunneling induced by spontaneous emission[J]. International Journal of Theoretical Physics , 2014, 54(7): 1-7.

[13] Huang Yixiao, Wang Xiaoqian, Sun Zhe, et al . Quantum tunneling and entanglement of dipolar spin-1 bosons in double well potentials[J]. European Physical Journal D , 2015, 69(7): 1-171.

[14] Feagin J M. Two-center interferometry and decoherence effects[J]. Physical Review A , 2006, 73(2): 164-171.

[15] Gamow G. Zur Quantentheorie des Atomkerns[J]. Zeitschrift Für Physik A Hadrons and Nuclei , 1928, 51(3): 204-212.

[16] Scully M O, Zubairy M S. Quantum Optics[M]. Cambridge: Cambridge University Press, 1997: 153-155, 199-201.

[17] Orszag M. Quantum Optics[M]. Berlin: Springer Berlin Heidelberg, 2008: 91-93.

丁明嵩, 吕桓林, 刘玉洁, 郑丽. 双势阱中原子质心运动对自发辐射的抑制[J]. 量子电子学报, 2017, 34(4): 473. DING Mingsong, LV Huanlin, LIU Yujie, ZHENG Li. Suppression of spontaneous emission induced by atomic mass centre moving in double-well potential[J]. Chinese Journal of Quantum Electronics, 2017, 34(4): 473.

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