Study on Coherent Dynamics of Alkali Metal Atomic Wave Packets

Abstract:

A theoretical model consisting of 5 energy levels, with the three upper states coherently excited, was proposed to analyze the coherent characteristics of atomic wave packets using perturbative theory. Pump-probe technique was implemented to detect coupled difference frequency four-wave mixing processes for studying the coherent characteristics of Rb atomic wave packets. Quantum beats were extracted the time domain signal by Fourier transform. Moreover, the variation of quantum beats was gained by time-dependent Fourier transform. The results show that the coherent characteristics of alkali metal atomic wave packets are closely related to quantum beats embedded in the time delayed four-wave mixing signal. Theoretical results are consistent with experimental observations, possessing potential applications in multi-channel information encoding and decoding.

• Periodical: Key Engineering Materials (Volume 538)
• Pages: 285-288
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.538.285
• Online since: January 2013
• Authors: Chang Jun Zhu, Jun Fang He
• Keywords: Alkali Metal, Atomic Wave Packets, Coherent Dynamics, Quantum Beats

References

[1] G. Alber, H. Ritsch, and P. Zoller: Phys. Rev. A, Vol. 34 (1986), p.1058.

[2] A. ten Wolde, L. D. Noordam, A. Lagendijk, and H. B. van Linden van den Heuvell: Phys. Rev. Lett. Vol. 61 (1988), p.2099.

DOI: 10.1103/physrevlett.61.2099

[3] C. J. Zhu, J. F. He, B. Xue, and X. J. Zhai: Chin. Phys. Lett. Vol. 24 (2007), p.2234.

[4] C. J. Zhu, J. F. He, X. J. Zhai, and B. Xue: Solid State Phenomena Vol. 181-182 (2012), p.413.

[5] C. J. Zhu, J. F. He, X. J. Zhai, and B. Xue: Chin. Phys. Lett. Vol. 25 (2008), p.3242.

[6] R. W. Boyd, M. S. Malcuit, D. J. Gauthier, and K. Rzazewski: Phys. Rev. A, Vol. 35 (1987), p.1648.