精确解旋转磁场作用下的两自旋1/2粒子体系,提出了脉冲宽度是影响态制备的一个非常重要的因素.从能级演化图形与几率跃迁图形上对应地进行了比较分析,脉冲宽度会决定施加点附近能级简并处的态是否发生交换;与Unanyan的计算结果相比较,发现绝热条件是否严格满足已经不那么重要,他们给出的绝热条件不是一个很好的判据.
参考文献
[1] | Kane B E.A silicon-based nuclear spin quantum computer[J].Nature,1998,393,133-137. |
[2] | Hatano T.Single-electron delocalization in hybrid vertical-lateral double quantum dots[J].Science,2005,309:268-271. |
[3] | Petta J R.Coherent manipulation of coupled electron spins in semiconductor quantum dots[J].Science,2005,309:2180. |
[4] | Johnson A C.Triplet-singlet spin relaxation via nuclei in a double quantum dot[J].Nature,2005,435:925. |
[5] | Gorman J,et al.Charge-quibit operation of an isolated double quantum dot[J].Phys.Rev.Lett.,2005,95:090502. |
[6] | Shapiro M.Principles of the Quantum Control of Molecular Processes[M].New York:Wiley and Sons,2003.. |
[7] | Vitanov N V.Coherent manipulation of atoms and molecules by sequential laser pulses[J].Adv.At.Mol.Opt.Phys.,2001,46:55. |
[8] | Shapiro E A,et al.Piecewise adiabatic passage with a series of femtosecond pulses[J].Phys.Rev.Left.,2007,99:033002. |
[9] | Zhdanovich S,et al.Population transfer between two quantum states by piecewise chirping of femtosecond pulses:theory and experiment[J].Phys.Rev.Lett.,2008,100:103004. |
[10] | Vitanov N V.Laser induced population transfer by adiabatic passage techniques[J].Annu.Rev.Phys.Chem.,2001,52:763. |
[11] | Unanyan R G,et al.Preparation of entangled states by adiabatic passage[J].Phys.Rev.Lett.,2001,87:137902. |
[12] | Karl-Peter M,et al.Inconsistency in the application of the adiabatic theorem[J].Phys.Rev.Lett.,2004,93:160408. |
[13] | Li Huazhong.Introducing adiabatic quantum computation[J].Progress in Physics (物理学进展),2008,28(4):396-400(in Chinese). |
[14] | Ni Guangjiong,Chen Suqing.Advanced Quantum Mechanics(高等量子力学)[M].Shanghai:Fudan University Press,2004,232-234(in Chinese). |
[15] | Shapiro E A.Piecewise adiabatic population transfer in a molecule via a wave packet[J].Phys.Rev.Lett.,2008,101(2):023601. |
[16] | Li Xiaohong,et al.Population transfer via adiabatic passage in the Rydberg potassium atom[J].Chinese Physics,2007,16(10):2924. |
[17] | Cao Huijuan,Hu Lian.Detecting the exchange constant of the coupled two-quibit system[J].Chinese Journal of Quantum Electronics(量子电子学报),2008,25:577-581(in Chinese). |
[18] | Yi Xuehua,et al.Geometric phase of a spin-1/2 particle driven by decohering quantum in adiabatic and nonadiabatic evolution[J].Chinese Journal of Quantum Electronics (量子电子学报),2006,23:628-633(in Chinese). |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%