柱形量子線中極化子及量子比特的性質(zhì).pdf

1、分類號Q壘魚旦工CS——學(xué)校代碼!Q!墨魚學(xué)號墊!幽Z委=萎～萎一3萋肉蒙名民慶大學(xué)碩士學(xué)位論文柱形量子線中極化子及量子比特的性質(zhì)Propertv|ofPolaronandQuantumBitinaCylindricalQuantumWire申請人：學(xué)科專業(yè)：研究方向：學(xué)位類別：指導(dǎo)教師：祁立娜物理學(xué)凝聚態(tài)理論學(xué)術(shù)學(xué)位丁朝華教授論文提交日期：二。一五年五月PropertyofPolaronandQuantumBitinaCylindri

2、calQuantumWireAbstractThepropertyofthepolaronandquantumbitinacylindricalquantumwirehavebeenstudiedbysolvingpreciselythetime—independentSchrdingerequation，thePekarvariationalmethod，LLPunitarytransformations，andthequantums

3、tatisticaltheoryThemainlyresultsare：Firstly，bysolvingtheeigenequationandthePekarvariationalmethod，thegroundstateenergy，thefirstexcitedstateenergy，theexcitatingenergyandtransitionfrequencyofacylindricalquantumwireinthecas

4、eofelectronLO——phononstrongcouplingsystemwereobtainedThenumericalcalculationsindicatethatthegroundstateenergyandthefirstexcitedstateenergy，theexcitatingenergyandtransitionfrequencydecreasewithincreasingtheradiusofthecyli

5、ndricalquantumwireItshowStheoutstandingquantumsizeeffect：Andboththegroundstateenergy，thefirstexcitedstateenergydecreasewithincreasingtheelectronLOphononcouplingstrength，inopposite，theexcitatingenergyandtransitionfrequenc

6、yincreasewithincreasingtheelectronLOphononcouplingstrengthSecondly，inthecaseofelectron—LO—phononweak—couplingsystem，thepropertyofthepolaroninacylindricalquantumwirewascalculatedbysolvingpreciselythetimeindependentSchrdin

7、gerequation，andLLPunitarytransformations，Thenumericalresultsshowthatthegroundstateenergyandfirstexcitedstateenergydecreasewithincreasingtheelectron—LOphononcouplingstrength，inopposite，theexcitatingenergyandtransitionfreq