摘要The coherent dynamics of dc-driven quantum-dot array with two embedded time-dependent impurities is investigated, the exact crossings and avoided crossings in the quasienergies are associated with the evolution dynamics of the electron by the introduction of the envelope lines of the site's maximum returning probability. Through a perturbative scheme, the time-dependent Hamiltonian is replaced by an equivalent static one, whose structure reveals the new quantum tunnelling mechanism in the time-periodic driving system and sheds light on the alternative interpretation of dynamic localization and delocalization.
Abstract：The coherent dynamics of dc-driven quantum-dot array with two embedded time-dependent impurities is investigated, the exact crossings and avoided crossings in the quasienergies are associated with the evolution dynamics of the electron by the introduction of the envelope lines of the site's maximum returning probability. Through a perturbative scheme, the time-dependent Hamiltonian is replaced by an equivalent static one, whose structure reveals the new quantum tunnelling mechanism in the time-periodic driving system and sheds light on the alternative interpretation of dynamic localization and delocalization.
(Scattering by point defects, dislocations, surfaces, and other imperfections (including Kondo effect))
引用本文:
LI Xiu-Ping;LA Shi-Jiang;WEN Yu-Bing;YAN Wei-Xian. Coherent Dynamics of Direct-Current-Driven Quantum-Dot-Array with Two Time-Dependent Embedded Impurities[J]. 中国物理快报, 2008, 25(4): 1396-1399.
LI Xiu-Ping, LA Shi-Jiang, WEN Yu-Bing, YAN Wei-Xian. Coherent Dynamics of Direct-Current-Driven Quantum-Dot-Array with Two Time-Dependent Embedded Impurities. Chin. Phys. Lett., 2008, 25(4): 1396-1399.
[1]Gl\"uck M et al 2002 Phys. Rep. 366 103 [2] Sibille A et al 1992 Appl. Phys. Lett. 60 457 [3] Dunlap D H and Kenkre V M 1986 Phys. Rev. B 343625 [4]{dignam1 Dignam M M and Martijn de Sterke C 2002 Phys. Rev. Lett. 88 046806 [5] Domachuk P, and Martijn de Sterke C 2002 Phys. Rev.B 66 165313 [6] Unterrainer K, Keay B J, Wanke M C et al 1996 Phys.Rev. Lett. 76 2973 [7] Liu R B and Zhu B F 2000 J. Phys.: Condens. Matter 12 L741 [8] Kleinert P and Bryskin V V 2001 J. Phys.: Condens.Matter 13 3157 [9] Li X P and Yan W X 2004 Chin. Phys. Lett. 21197 [10] Yan W X, Claro F and Xie B H et al 2004 Phys. Rev.B 69 073306 [11] Zhang A Z et al 2000 Phys. Rev. B 61 045319 [12] Martinez D F 2003 J. Phys. A: Math. Gen. 369872 [13] Martinez D F and Molina R A 2006 Phys. Rev. B 73 073104 [14] Longhi S 2006 Phys. Rev. B 73 193305 [15] Weiss C 2006 Phys. Rev. B 73 054301 [16] Zak J 1993 Phys. Rev. Lett. 71 2623 [17] Holthaus M 1992 Phys. Rev. Lett. 69 351 [18] Zhao X G 1994 J. Phys.: Condens. Matter 62751 [19] Yan W X, Xie B H and Jin S 2007 Phys. Lett. A 369 243 [20] Grifoni M, and H\"anggi P 1998 Phys. Rep. 304229 [21] Wang L M, Duan S Q, Zhao X G et al 2004 Chin. Phys.Lett. 21 370 [22] Wang L M, Duan S Q, Zhao X G et al, 2004 Chin. Phys.Lett. 21 2033 [23] Liu C S and Ma B K 2003 Phys. Lett. A 315 301 [24] Liu Y S and Chen H 2004 Phys. Lett. A 324 235 [25] Rahav S, Gilary I, and Fishman S 2003 Phys. Rev. A 68 013820 [26] Scully M O and Zubairy M S 1997 Quantum Optics (NewYork: Cambridge University Press) chap 7
2008, Vol. 25 
