Quantum Diffraction of Wave Function in Time-domain by Bloch Vector Model

LIU Birui; FU Zhenxing

doi:10.3981/j.issn.1000-7857.2014.24.009

PDF(2260 KB)

Science & Technology Review ›› 2014, Vol. 32 ›› Issue (24) : 60-63. DOI: 10.3981/j.issn.1000-7857.2014.24.009

Articles

Quantum Diffraction of Wave Function in Time-domain by Bloch Vector Model

Author information -

College of Physics and Information Technology, Ningxia Normal University, Guyuan 756000, China

Abstract

To explore the physical mechanism and the essence of the quantum diffraction in time-domain, the wave function diffraction in time-domain of a two-level system under the pulse field with a chirped frequency is investigated by means of the density matrix equation and the Bloch vector model. The modulations of the quantum diffraction by the chirped factors are discussed. The dynamic evolution process of the population transfer and the effect of the quantum diffraction with different chirped factors are analyzed. The interaction mechanism and the physical process can found a clear description in the Bloch vector picture.

Key words

chirped field / two-level system / population transfer / Bloch vector model

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

LIU Birui, FU Zhenxing. Quantum Diffraction of Wave Function in Time-domain by Bloch Vector Model[J]. Science & Technology Review, 2014, 32(24): 60-63 https://doi.org/10.3981/j.issn.1000-7857.2014.24.009

References

[1] Chanu S R, Singh A K, Brun B, et al. Subnatural linewidth in a strongly-driven degenerate two-level system[J]. Optics Communications, 2011, 284(20): 4957-4960.
[2] Campo A D, García C G, Muga J G. Quantum transients[J]. Physics Reports, 2009, 476(1-3): 1-50.
[3] Liao P, Yu S, Luo B, et al. Phase-controlled all-optical switching based on coherent population oscillation in a two-level system[J]. Physics Letters A, 2011, 375(47): 4172-4177.
[4] Rangelov A A, Vitanov N V, Shore B W. Rapid adiabatic passage without level crossing[J]. Optics Communications, 2010, 283(7): 1346-1350.
[5] Li Y F, Ren L Q, Ma R Q, et al. Quantum diffraction of wave function in time-domain[J]. Science in China, Series G, 2009, 52(6): 873-876.
[6] Baibekov E, Kurkin I, Gafurov M, et al. Coherence times and Rabi oscillations in CaWO₄: Cr⁵⁺ crystal[J]. Journal of Magnetic Resonance, 2011, 209(1): 61-68.
[7] Torosov B T, Vasilev G S, Vitanov N V. Symmetries and asymmetries in coherent atomic excitation by chirped laser pulses[J]. Optics Communications, 2010, 283(7): 1338-1345.
[8] Djotyan G P, Bakos J S, Sorlei Zs, et al. Coherent control of atomic quantum states by single frequency-chirped laser pulses[J]. Physical Review A, 2004, 70: 063406.
[9] Zheng H, Zhang X, Zhang Z, et al. Parametric amplification and cascaded-nonlinearity processes in common atomic system[J]. Scientific Reports, 2013, 3: 1885.
[10] Wollenhaupt M, Präkelt A, Sarpe T C, et al. Femtosecond strong-field quantum control with sinusoidally phase-modulated pulses[J]. Physical Review A, 2006, 73: 063409.
[11] 朱清时, 史强. 激光场中的量子跃迁动力学[M]. 合肥: 安徽教育出版社, 2003: 170-176. Zhu Qingshi, Shi Qiang. Dynamics of quantum transition in laser fields[M]. Hefei: Anhui Education Press, 2003: 170-176.
[12] 石顺祥, 陈国夫, 赵卫, 等. 非线性光学[M]. 西安: 西安电子科技大学出版社, 2003, 229-241. Shi Shunxiang, Chen Guofu, Zhao Wei, et al. Nonlinear optics[M]. Xi'an: Xidian University Press, 2003: 229-241
[13] 伏振兴, 李永放, 张艳丽, 等. 双共振激发多光子电离过程中电离光电子谱的量子相干调制[J]. 光子学报, 2008, 37(7): 1482-1487. Fu Zhenxing, Li Yongfang, Zhang Yanli, et al. Quantum coherent modulation on photoelectron spectra in two resonant multi-photon ionization process[J]. Acta Photonic Sinica, 2008, 37(7): 1482-1487.