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The tunneling dynamics and periodic modulation effect of a two-component Bose-Einstein condensate in an one-dimensional optical lattice are investigated. By using the two-mode approximation, we study the influence of the interaction between two-component BECs on the tunnelling dynamics of the system numerically. The dynamic behavior of the system is investigated by adding a periodic modulation on the interaction between two-component atoms. We get the region for the onset of the tunneling, unstability and the self-trapping of the system with the changing modulation amplitude and frequency. We find that for the intermediate- and the low- frequency modulations, the dynamic behaviors of the system are dramatically different.
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Keywords:
- two-component BECs /
- optical lattice /
- tunneling dynamics /
- irregular oscillation
[1] ［1］Anderson B P, Kasevich M A 1998 Science 282 1686
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[7] ［7］Liu J, Fu L B, Ou B Y, Chen S G, Dae-II Choi, Wu B, Niu Q 2002 Phys. Rev. A 66 023404
[8] ［8］Zhang A X, Xue J K 2007 Phys. Rev. A 75 013624
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[13] ］Wu Y, Yang X X 2007 Phys. Rev. Lett. 98 013601
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[16] ］Wang G F,Ye D F, Fu L B, Chen X Z, Liu J 2006 Phys. Rev. A 74 033414
[17] ］Xue J K, Zhang A X 2008 Phys. Rev. Lett. 101 180401
[18] ］Xue J K, Zhang A X, Liu J 2008 Phys. Rev. A 77 013602
[19] ］Ma Y, Fu L B， Yang Zh A ，Liu J 2006 Acta Phys. Sin. 55 5623 (in Chinese) ［马云、傅立斌、杨志安、刘杰 2006 物理学报 55 5623］
[20] ］Wei X F, Tang R A, Yong W M, Xue J K 2008 Chin. Phys. Lett. 25 1564
[21] ］Fang Y C, Yang Z A, Yang L Y 2008 Acta Phys. Sin. 57 0661 (in chinese) ［房永翠、杨志安、杨丽云 2008 物理学报 57 0661］
[22] ］Ziegler K 2003 Phys. Rev. A 68 053602
[23] ］Chen G H, Wu Y S 2003 Phys. Rev. A 67 013606
[24] ］Wang G F, Fu L B, Liu J 2006 Phys. Rev. A 73 013619 Wang G F, Fu L B, Zhao H, Liu J 2005 Acta Phys. Sin. 54 5003(in chinese) ［王冠芳、傅立斌、赵鸿、刘杰 2005 物理学报 54 5003］
[25] ］Yan K Z,Tan W H 1999 Acta Phys. Sin. 48 1185 (in Chinese) ［闫珂柱、谭维翰 1999 物理学报 48 1185 ］Yan K Z,Tan W H 2000 Acta Phys. Sin. 49 1909 (in Chinese) ［闫珂柱、谭维翰 2000 物理学报 49 1909 ］
[26] ］Chen H J, Li H C, Xue J K 2008 Commun. Theor. Phys. 49 1519 Chen H J, Xue J K 2008 Acta Phys. Sin. 57 3962 (in chinese) ［陈海军、薛具奎 2008 物理学报 57 3962］
[27] ］Xiao Y F,Wang D L, Wang F J, Yan X H 2006 Acta Phys. Sin. 55 0547 (in Chinese) ［肖宇飞、王登龙、王凤姣、闫晓红 2006 物理学报 55 0547］
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[1] ［1］Anderson B P, Kasevich M A 1998 Science 282 1686
[2] ［2］Bronski J C, Carr L D, Deconinck B, Kutz J N 2001 Phys. Rev. Lett. 86 1402
[3] ［3］Choi D I,Niu Q 1999 Phys. Rev. Lett. 82 2022
[4] ［4］Morsch O, Muller J H, Cristiani M, Ciampini D, Arimondo E 2001 Phys. Rev. Lett. 87 140402
[5] ［5］Wu B, Niu Q 2000 Phys. Rev. A 61 023402
[6] ［6］Wu B, Diener R B, Niu Q 2002 Phys. Rev. A 65 025601
[7] ［7］Liu J, Fu L B, Ou B Y, Chen S G, Dae-II Choi, Wu B, Niu Q 2002 Phys. Rev. A 66 023404
[8] ［8］Zhang A X, Xue J K 2007 Phys. Rev. A 75 013624
[9] ［9］Xue J K 2005 Phys. Lett. A 341 527
[10] ］Diakonov D, Jensen L M, Pethick C J 2002 Phys. Rev. A 66 013064
[11] ］Mueller E J, 2002 Phys. Rev. A 66 063603
[12] ］Fallni L,Sarlo L D, Lye J E, Modugno M, Saers R,Fort C, Inyuscio M 2004 Phys. Rev. Lett. 93 140406
[13] ］Wu Y, Yang X X 2007 Phys. Rev. Lett. 98 013601
[14] Wu Y, Yang X X 2003 Phys. Rev. A 68 013608
[15] ］Wu B, Niu Q 2003 New J. Phys. 5 104 Liu B, Fu L B, Yang S P, Liu J 2007 Phys. Rev. A 75 033601
[16] ］Wang G F,Ye D F, Fu L B, Chen X Z, Liu J 2006 Phys. Rev. A 74 033414
[17] ］Xue J K, Zhang A X 2008 Phys. Rev. Lett. 101 180401
[18] ］Xue J K, Zhang A X, Liu J 2008 Phys. Rev. A 77 013602
[19] ］Ma Y, Fu L B， Yang Zh A ，Liu J 2006 Acta Phys. Sin. 55 5623 (in Chinese) ［马云、傅立斌、杨志安、刘杰 2006 物理学报 55 5623］
[20] ］Wei X F, Tang R A, Yong W M, Xue J K 2008 Chin. Phys. Lett. 25 1564
[21] ］Fang Y C, Yang Z A, Yang L Y 2008 Acta Phys. Sin. 57 0661 (in chinese) ［房永翠、杨志安、杨丽云 2008 物理学报 57 0661］
[22] ］Ziegler K 2003 Phys. Rev. A 68 053602
[23] ］Chen G H, Wu Y S 2003 Phys. Rev. A 67 013606
[24] ］Wang G F, Fu L B, Liu J 2006 Phys. Rev. A 73 013619 Wang G F, Fu L B, Zhao H, Liu J 2005 Acta Phys. Sin. 54 5003(in chinese) ［王冠芳、傅立斌、赵鸿、刘杰 2005 物理学报 54 5003］
[25] ］Yan K Z,Tan W H 1999 Acta Phys. Sin. 48 1185 (in Chinese) ［闫珂柱、谭维翰 1999 物理学报 48 1185 ］Yan K Z,Tan W H 2000 Acta Phys. Sin. 49 1909 (in Chinese) ［闫珂柱、谭维翰 2000 物理学报 49 1909 ］
[26] ］Chen H J, Li H C, Xue J K 2008 Commun. Theor. Phys. 49 1519 Chen H J, Xue J K 2008 Acta Phys. Sin. 57 3962 (in chinese) ［陈海军、薛具奎 2008 物理学报 57 3962］
[27] ］Xiao Y F,Wang D L, Wang F J, Yan X H 2006 Acta Phys. Sin. 55 0547 (in Chinese) ［肖宇飞、王登龙、王凤姣、闫晓红 2006 物理学报 55 0547］
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