Abstract
In this paper a Y-type four-level atom interacting with external fields system is investigated. It is shown that increasing the control field can reduce the probe absorption, the electromagnetically induced transparency (EIT) and gain can be obtained if the parameters are taken appropriately. An interesting phenomenon is found that the system appears to be probe gain in a large region if the external fields Rabi phases are taken appropriately, too.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Banacloche, J., Gea-Li, Y., Jin, S., Xiao, M. et al., Electromagnetically induced transparency in ladder-type inhomogeneously broadened media: Theory and experiment, Phys. Rev. A, 1995, 51: 576–584.
Gray, H. R., Whitley, R. M., Stroud, C. R. et al., Coherent trapping of atomic populations. Opt. Lett., 1978, 3: 218–238.
Vemuri, G., Vasavada, K. V., Agarwal, G. S., Lasing without inversion in the absence of a coherent coupling field, Phys. Rev. A, 1995, 52: 3228–3230.
Zhu, S. Y., Scully, M. O., Spectral line elimination and spontaneous emission cancellation via quantum interference. Phys. Rev. Lett., 1996, 76: 388–391.
Schmidt, H., Imamoglu, A., Giant Kerr nonlinearities obtained by electromagnetically induced transparency, Optics Lett., 1996, 21: 1936–1940.
Hau, L. V., Harris, S. E., Dutton, Z. et al., Light speed reduction to 17 meters per second in an ultra cold atomic gas, Nature, 1999, 397: 594–598.
Liu, C., Dutton, Z., Behroozi, C. H., et al., Observation of coherent optical information storage in an atomic medium using halted light pulses. Nature, 2001, 409, 490–493.
Boller, K. J., Imamolu, A., Harris, S. E., Observation of electromagnetically induced transparency, Phys. Rev. Lett., 1991, 66: 2593–2596.
Kash, M. M., Sautenkov, V. A., Zibrov, A. S. et al., Ultraslow group velocity and enhanced nonlinear optical effects in a coherently driven hot atomic gas, Phys. Rev A, 1999, 82: 5229–5232.
Wang, H., Goorskey, D., Xiao, M., enhanced Kerr nonlinearity via atomic coherence in a three-level at omic system, Phys. Rev. Lett., 2001, 87(073601): 1–4.
Sandhya, S. N., Sharma, K. K., Atomic coherence effects in four-level systems: Doppler-free absorption within an electromagnetically-induced-transparency window, Phys. Rev. A, 1997, 55(3): 2155–2158.
Gu, Y. Sun, Q. Q., Gong, Q. H., Coherent hole burning and Mollow absorption effects in the cycling transition Fe=0←→Fg=1 subject to a magnetic field, Phys. Rev. A, 2004, 69 (063805): 1–6.
Liu Zhengdong, Wu Qiang, Electromagnetically induced transparency in a four-level atomic system driven by three coupled fields. Acta Phys. Sin. (in Chinese), 2004, 53: 2970–2973.
Agarwal, G. S., Harshawardhan, W., Inhibition and enhancement of two photon absorption, Phys. Rev. Lett., 1996, 77(6): 1039–1042.
Hou, B. P., Wang, S. J. et al., Effect of vacuum-induced coherence on single- and two- photon absorption in a four-level Y-type atomic system, Phys. Rev. A, 2004, 69(053805): 1–6.
Harris, S. E., Field, J. E., Imamoglu, A., Nonlinear optical process using electromagnetically induced transparency, Phys. Rev. Lett., 1990, 64(10) 1107–1110.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Zhang, L., Liu, Z. & Chen, J. The electromagnetically induced transparency in the Y-type four-level atom system at low light levels. Sci China Ser G: Phy & Ast 48, 593–599 (2005). https://doi.org/10.1360/142005-147
Received:
Issue Date:
DOI: https://doi.org/10.1360/142005-147