Zero-field spin quantum beats in charged quantum dots

被引：65

作者：

Kozin, IE ^{[1
]}

Davydov, VG

Ignatiev, IV

Kavokin, AV

Kavokin, KV

Malpuech, G

Ren, HW

Sugisaki, M

Sugou, S

Masumoto, Y

机构：

[1] JST, ERATO, Single Quantum Dot Project, Tokyo, Japan

[2] St Petersburg State Univ, Inst Phys, St Petersburg 198504, Russia

[3] Univ Clermont Ferrand, LASMEA, F-63177 Aubiere, France

[4] AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia

[5] Univ Tsukuba, Inst Phys, Tsukuba, Ibaraki 3058571, Japan

来源：

PHYSICAL REVIEW B | 2002年 / 65卷 / 24期

关键词：

D O I：

10.1103/PhysRevB.65.241312

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Spins of resident electrons in charged quantum dots (QD's) act as local magnets inducing the Zeeman splitting of excitons trapped into dots. This is evidenced by the observation of quantum beats in the linearly polarized time-resolved photoluminescence of a biased array of self-assembled InP QD's. An external magnetic field is found to shorten the spin beats' decay time keeping constant the frequency of the beats. A model using the pseudospin formalism allows one to attribute the observed quantum beats to the radiative decay of hot trions having two electrons that occupy different energy levels in a QD.

引用

收藏

页码：2413121 / 2413124

页数：4

相关论文

共 18 条

[1] Strong variation of the exciton g factors in self-assembled In0.60Ga0.40As quantum dots [J].

Bayer, M ;

Kuther, A ;

Schäfer, F ;

Reithmaier, JP ;

Forchel, A .

PHYSICAL REVIEW B, 1999, 60 (12) :R8481-R8484

[2] Coherent optical control of the quantum state of a single quantum dot [J].

Bonadeo, NH ;

Erland, J ;

Gammon, D ;

Park, D ;

Katzer, DS ;

Steel, DG .

SCIENCE, 1998, 282 (5393) :1473-1476

[3] Carrier-carrier correlations in an optically excited single semiconductor quantum dot [J].

Dekel, E ;

Gershoni, D ;

Ehrenfreund, E ;

Garcia, JM ;

Petroff, PM .

PHYSICAL REVIEW B, 2000, 61 (16) :11009-11020

[4] Optical orientation and alignment of excitons in quantum dots [J].

Dzhioev, RI ;

Zakharchenya, BP ;

Ivchenko, EL ;

Korenev, VL ;

Kusraev, YG ;

Ledentsov, NN ;

Ustinov, VM ;

Zhukov, AE ;

Tsatsul'nikov, AF .

PHYSICS OF THE SOLID STATE, 1998, 40 (05) :790-793

[5] Optical excitations of a self-assembled artificial ion [J].

Findeis, F ;

Baier, M ;

Zrenner, A ;

Bichler, M ;

Abstreiter, G ;

Hohenester, U ;

Molinari, E .

PHYSICAL REVIEW B, 2001, 63 (12)

[6] Observation of multicharged excitons and biexcitons in a single InGaAs quantum dot -: art. no. 161305 [J].

Finley, JJ ;

Fry, PW ;

Ashmore, AD ;

Lemaître, A ;

Tartakovskii, AI ;

Oulton, R ;

Mowbray, DJ ;

Skolnick, MS ;

Hopkinson, M ;

Buckle, PD ;

Maksym, PA .

PHYSICAL REVIEW B, 2001, 63 (16)

[7] Photon beats from a single semiconductor quantum dot [J].

Flissikowski, T ;

Hundt, A ;

Lowisch, M ;

Rabe, M ;

Henneberger, F .

PHYSICAL REVIEW LETTERS, 2001, 86 (14) :3172-3175

[8] Spin coherence in semiconductor quantum dots [J].

Gupta, JA ;

Awschalom, DD ;

Peng, X ;

Alivisatos, AP .

PHYSICAL REVIEW B, 1999, 59 (16) :10421-10424

[9] Few-particle effects in semiconductor quantum dots: Observation of multicharged excitons [J].

Hartmann, A ;

Ducommun, Y ;

Kapon, E ;

Hohenester, U ;

Molinari, E .

PHYSICAL REVIEW LETTERS, 2000, 84 (24) :5648-5651

[10] Electron accumulation in single InP quantum dots observed by photoluminescence [J].

Hessman, D ;

Persson, J ;

Pistol, ME ;

Pryor, C ;

Samuelson, L .

PHYSICAL REVIEW B, 2001, 64 (23)