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We have studied the light propagation properties in an inverted Y-type four-level quantum system coupled with probe, couple and driving fields. Using the numerical simulation method, we investigate the absorption properties of the probe light field when the Rabi frequency and detuning of the driving field are changed. From the three-dimensional graphics, we find the variations of the probe group velocity at the electromagnetically induced transparency windows. Farthermore, we theoretically obtain the conversion among subluminal, vacuum and superluminal light propagation by adjusting the Rabi frequency and detuning of the external driving field properly.
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Keywords:
- inverted Y-type four-level /
- group velocity /
- superluminal propagation /
- subluminal propagation
[1] Han D A, Zeng Y G, Cao H 2008 Commun. Theor. Phys. 50 197
[2] Han D A, Guo H, Bai Y F, Sun H 2005 Phys. Lett. A 334 243
[3] Li C B, Zhang Y P, Nie Z Q, Zheng H B, Shi M Z, Liu D N, Song J P, Lu K Q 2009 Chin. Phys. B 18 5354
[4] Chen J, Liu Z D, Zheng J, Pang W, You S P 2010 Chin. Phys. B 19 044201
[5] Luo B, Hang C, Li H J, Huang G X 2010 Chin. Phys. B 19 054214
[6] Liu H Y, Meng Z M, Dai Q F, Wu L J, Lan S, Liu S H 2009 Acta Phys. Sin. 58 4702 (in Chinese) [刘海英、蒙自明、戴峭峰、吴立军、兰 胜、刘颂豪 2009 58 4702]
[7] Zhang L S, Li X L, Wang J, Yang L J, Feng X M, Li X W, Fu G S 2008 Acta Phys. Sin. 57 4921 (in Chinese) [张连水、李晓莉、王 健、杨丽君、冯晓敏、李晓苇、傅广生 2008 57 4921]
[8] Meng D D, Liu X D, Zheng Y, Chee J, Hu Z N, Yan X Q 2010 Optoelectronics Lett. 6 65
[9] Meng D D, Liu X D, Zheng Y, Yan X Q, Hu Z N, Qi Z 2010 J. Tianjin Normal Univ. 30 40 (in Chinese) [孟冬冬、刘晓东、郑 渝、闫学群、胡占宁、戚 桢 2010 天津师范大学学报 30 40] 〖10] Zheng J, Liu Z D, Zeng F H, Fang H J 2008 Acta Phys. Sin. 57 4219 (in Chinese) [郑 军、刘正东、曾福华、方慧娟 2008 57 4219]
[10] Zhang L Y, Liu Z D 2005 Acta Phys. Sin. 54 3641 (in Chinese) [张丽英、刘正东 2005 54 3641]
[11] Sadeghi S M, Meyer J 1999 Phys. Rev. A 59 3998
[12] Zhang L S, Zhuang Z H, Li X L, Yang L J, Feng X M 2007 Chin. J. Quant. Electro. 24 548 (in Chinese) [张连水、庄仲红、李晓莉、杨丽君、冯晓敏 2007 量子电子学报 24 548]
[13] Zhang Y P, Khadka U, Anderson B, Xiao M 2009 Phys. Rev. Lett. 102 013601
[14] Joshi A, Xiao M 2005 Phys. Rev. A 71 041801
[15] Joshi A, Xiao M 2005 Phys. Rev. A 72 062319
[16] Joshi A, Xiao M 2006 Phys. Rev. A 74 052318
[17] Hu X M, Wang F 2007 Phys. Rev. A 75 065802
[18] Zhang Y P, Anderson B, Xiao M 2008 Phys. Rev. A 77 061801
[19] Yang X H, Zhu S Y 2008 Phys. Rev. A 78 023818
[20] Qi J B 2010 Phys. Scr. 81 015402
[21] Li Y, Sun C P 2004 Phys. Rev. A 69 051802
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[1] Han D A, Zeng Y G, Cao H 2008 Commun. Theor. Phys. 50 197
[2] Han D A, Guo H, Bai Y F, Sun H 2005 Phys. Lett. A 334 243
[3] Li C B, Zhang Y P, Nie Z Q, Zheng H B, Shi M Z, Liu D N, Song J P, Lu K Q 2009 Chin. Phys. B 18 5354
[4] Chen J, Liu Z D, Zheng J, Pang W, You S P 2010 Chin. Phys. B 19 044201
[5] Luo B, Hang C, Li H J, Huang G X 2010 Chin. Phys. B 19 054214
[6] Liu H Y, Meng Z M, Dai Q F, Wu L J, Lan S, Liu S H 2009 Acta Phys. Sin. 58 4702 (in Chinese) [刘海英、蒙自明、戴峭峰、吴立军、兰 胜、刘颂豪 2009 58 4702]
[7] Zhang L S, Li X L, Wang J, Yang L J, Feng X M, Li X W, Fu G S 2008 Acta Phys. Sin. 57 4921 (in Chinese) [张连水、李晓莉、王 健、杨丽君、冯晓敏、李晓苇、傅广生 2008 57 4921]
[8] Meng D D, Liu X D, Zheng Y, Chee J, Hu Z N, Yan X Q 2010 Optoelectronics Lett. 6 65
[9] Meng D D, Liu X D, Zheng Y, Yan X Q, Hu Z N, Qi Z 2010 J. Tianjin Normal Univ. 30 40 (in Chinese) [孟冬冬、刘晓东、郑 渝、闫学群、胡占宁、戚 桢 2010 天津师范大学学报 30 40] 〖10] Zheng J, Liu Z D, Zeng F H, Fang H J 2008 Acta Phys. Sin. 57 4219 (in Chinese) [郑 军、刘正东、曾福华、方慧娟 2008 57 4219]
[10] Zhang L Y, Liu Z D 2005 Acta Phys. Sin. 54 3641 (in Chinese) [张丽英、刘正东 2005 54 3641]
[11] Sadeghi S M, Meyer J 1999 Phys. Rev. A 59 3998
[12] Zhang L S, Zhuang Z H, Li X L, Yang L J, Feng X M 2007 Chin. J. Quant. Electro. 24 548 (in Chinese) [张连水、庄仲红、李晓莉、杨丽君、冯晓敏 2007 量子电子学报 24 548]
[13] Zhang Y P, Khadka U, Anderson B, Xiao M 2009 Phys. Rev. Lett. 102 013601
[14] Joshi A, Xiao M 2005 Phys. Rev. A 71 041801
[15] Joshi A, Xiao M 2005 Phys. Rev. A 72 062319
[16] Joshi A, Xiao M 2006 Phys. Rev. A 74 052318
[17] Hu X M, Wang F 2007 Phys. Rev. A 75 065802
[18] Zhang Y P, Anderson B, Xiao M 2008 Phys. Rev. A 77 061801
[19] Yang X H, Zhu S Y 2008 Phys. Rev. A 78 023818
[20] Qi J B 2010 Phys. Scr. 81 015402
[21] Li Y, Sun C P 2004 Phys. Rev. A 69 051802
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