浏览全部资源
扫码关注微信
1.内蒙古民族大学 数理学院, 内蒙古 通辽 028043
2.北京航天万鸿高科技有限公司秦皇岛分公司, 河北 秦皇岛 066004
3.河北科技师范学院 凝聚态物理研究所, 河北 秦皇岛 066004
[ "乌云其木格(1964-), 女, 内蒙古通辽人, 硕士, 教授, 2005年于内蒙古民族大学获得硕士学位, 主要从事凝聚态光学性质方面的研究。E-mail:wuyun66@126.com" ]
[ "李红敏(1982-), 女, 河北邯郸人, 硕士研究生, 2011年于曲阜师范大学获得学士学位, 主要从事凝聚态理论与方法的研究。E-mail:eedcl2603@hevttc.edu.cn" ]
纸质出版日期:2020-8,
收稿日期:2020-4-11,
录用日期:2020-5-6
扫 描 看 全 文
乌云其木格, 连永强, 李红敏, 等. 电场和温度对施主中心量子点中束缚极化子基态寿命的影响[J]. 发光学报, 2020,41(8):991-998.
WUYUNQIMUGE, Yong-qiang LIAN, Hong-min LI, et al. Influences of Electric Field and Temperature on Ground-state Lifetime of Bound Polaron in Donor-center Quantum Dots[J]. Chinese Journal of Luminescence, 2020,41(8):991-998.
乌云其木格, 连永强, 李红敏, 等. 电场和温度对施主中心量子点中束缚极化子基态寿命的影响[J]. 发光学报, 2020,41(8):991-998. DOI: 10.37188/fgxb20204108.0991.
WUYUNQIMUGE, Yong-qiang LIAN, Hong-min LI, et al. Influences of Electric Field and Temperature on Ground-state Lifetime of Bound Polaron in Donor-center Quantum Dots[J]. Chinese Journal of Luminescence, 2020,41(8):991-998. DOI: 10.37188/fgxb20204108.0991.
采用Lee-Low-Pines变换和Pekar类型变分法推导出非对称高斯势施主中心量子点中束缚极化子的基态和激发态能量和波函数,进而构造了一量子比特所需的二能级结构。基于费米黄金规则和偶级近似研究了束缚极化子基态的衰变。引入了一个用两态极化子基态衰变时间来量化量子点量子比特退相干时间的量度法,并与极化子激发态衰变时间量化量子点量子比特退相干度量法进行了对照讨论,揭示了二者的相同物理机理。通过研究电场下材料的介电常数比、电声耦合常数和温度对施主中心量子点中束缚极化子基态寿命的影响,揭示了材料属性与环境因素对量子点量子比特退相干的影响。
The ground-state and excited-state energy and wave function of polaron in donor-center quantum dot with asymmetric Gaussian potential are derived by Lee-Low-Pines transformation and Pekar-type variational method
and then the two-level structure for a qubit is constructed. The measure of qubit decoherence time of quantum dots quantified by ground state decay time of two-state polaron is established
which is compared with the measure of qubit decoherence time of quantum dots quantified by polaron excited state decay time. And their physical mechanism is revealed. By studying the influence of dielectric constant ratio
electron-phonons coupling constant
temperature and electric field on the ground-state lifetime of bound polaron in the donor-center quantum dot with asymmetric Gaussian potential
the influence of material properties
temperature
electric field and other environmental factors on qubit decoherence of quantum dots is revealed.
施主中心量子点非对称高斯势束缚极化子基态寿命
donor-center quantum dotasymmetric Gaussian potentialbound polaronground-state lifetime
李树深, 吴晓光, 郑厚植.固态量子计算的若干重要物理问题研究[J].物理, 2004, 33(6):404-406.
LI S S, WU X G, ZHENG H Z. Recent progress in solid-state quantum computing[J].Physics, 2004, 33(6):404-406. (in Chinese)
LI S S, XIA J B, LIU L L, et al.. InAs/GaAs single-electron quantum dot qubit[J].J. Appl. Phys., 2001, 90(12):6151-6155.
PETTA J R, JOHNSON A C, TAYLOR J M, et al.. Coherent manipulation of coupled electron spins in semiconductor quantum dots[J].Science, 2005, 309(5744):2180-2184.
VARWIG S, RENÉ A, GREILICH S, et al.. Temperature dependence of hole spin coherence in (In, Ga) As quantum dots measured by mode-locking and echo techniques[J].Phys. Rev. B, 2013, 87(11):115307-1-5.
SUN Y, DING Z H, XIAO J L. Effects of magnetic field on the coherence time of a parabolic quantum dot qubit[J].J. Low Temp. Phys., 2014, 177(3-4):151-156.
FOTUE A J, FOBASSO M F C, KENFACK S C, et al.. Tunable potentials and decoherence effect on polaron in nanostructures[J].Eur. Phys. J. Plus, 2016, 131(6):205-1-15.
XIAO W, XIAO J L. Effects of temperature and electric field on the coherence time of a RbCl parabolic quantum dot qubit[J].Int. J. Theor. Phys., 2016, 55(6):2936-2941.
SUN Y, DING Z H, XIAO J L. Effects of temperature and magnetic field on the coherence time of a RbCl parabolic quantum dot qubit[J].J. Electron. Mater., 2017, 46(1):439-442.
BAI X F, XIN W, EERDUNCHAOLU. The influences of the dispersion and impurity on the properties of the Gaussian confining potential qubit with magnetic field[J].Int J. Mod. Phys. B, 2019, 33(7):1950322-1-12.
谷娟, 梁九卿.施主中心量子点能谱分析[J].物理学报, 2005, 54(11):5335-5338.
GU J, LIANG J Q. Energy spectrum analysis of donor-center quantum dots[J].Acta Phys. Sinica, 2005, 54(11):5335-5338. (in Chinese)
XIE W F. Two interacting electrons in a spherical Gaussian confining potential quantum well[J].Commun. Theor. Phys., 2004, 42(1):151-156.
XIAO J L.The effect of electric field on RbCl asymmetric Gaussian potential quantum well qubit[J].Int. J. Theor. Phys., 2016, 55(1):147-154.
KHORDAD R, GOUDARZI S, BAHRAMIYAN H. Effect of temperature on lifetime and energy states of bound polaron in asymmetrical Gaussian quantum well[J].Indian J. Phys., 2016, 90(6):659-664.
XIAO W, QI B, XIAO J L. Impurity effect of asymmetric Gaussian potential quantum well qubit[J].J. Low Temp. Phys., 2015, 179(3-4):166-174.
MIAO X J, SUN Y, XIAO J L. Effect of impurities on the properties of bound polarons in an asymmetric Gaussian confinement potential quantum well[J].J. Korean Phys. Soc., 2015, 67(7):1197-1200.
BOUCAUD P, SAUVAGE S, BRAS F, et al.. Pump-probe analysis of polaron decay in InAs/GaAs self-assembled quantum dots[J].Phys. E: Low-dimens. Syst. Nanostruct., 2005, 26(1-4):59-62.
ZIBIKA E, WILSON L R, GREEN R P, et al.. Polaron relaxation dynamics in InAs/GaAs self-assembled quantum dots[J].Phys. E: Low-dimens. Syst. Nanostruct., 2004, 21(2-4):405-408.
VERZELEN O, FERREIRA R, BASTARD G. Polaron couplings in quantum dot molecules[J].Phys. E:Low-dimens. Syst. Nanostruct., 2002, 13(2-4):309-312.
YU Y F, XIAO J L, YIN J W, et al.. The ground-state lifetime of polaron in a parabolic quantum dot[J].Chin. Phys. B, 2008, 17:2236-2239.
LI Z X. The ground-state lifetime of polaron in a two-dimensional quantum pseudodot system[J].Indian J. Phys., 2019, 93(6):707-711.
LEE T D, LOW F E, PINES D. The motion of slow electrons in a polar crystal[J].Phys. Rev., 1953, 90(2):297-302.
LANDAU L D, PEKAR S I. Effective mass of a polaron[J].Zh. Eksp. Teor. Fiz., 1948, 18(5):419-423.
BRUMMELL M A, NICHOLAS R J, HOPKINS M A, et al.. Modification of the electron-phonon interactions in GaAs-GaAlAs heterojunctions[J].Phys. Rev. Lett., 1987, 58(1):77-80.
BAI X F, XIN W, YIN H W, et al.. Electromagnetic-field dependence of the internal excited state of the polaron and the qubit in quantum dot with thickness[J].J. Korean Phys. Soc., 2017, 70(11):956-961.
0
浏览量
83
下载量
0
CSCD
关联资源
相关文章
相关作者
相关机构