Spin characteristics of excitonic absorption in multiply charged quantum dots

被引：4

作者：

Cheng, Shun-Jen ^{[1
]}

机构：

[1] Natl Chiao Tung Univ, Dept Electrophys, Hsinchu 300, Taiwan

来源：

PHYSICAL REVIEW B | 2007年 / 76卷 / 07期

关键词：

D O I：

10.1103/PhysRevB.76.075329

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The excitonic absorption spectra of negatively charged self-assembled quantum dots as a function of resident electron number (N-e=0-5) are theoretically studied using the configuration interaction method. Spin Pauli blockade, Coulomb (exchange and correlation) interactions, and symmetry of dot shape are identified as the three main underlying mechanisms, sensitively depending on N-e, in the spin characteristic spectra. In particular, we predict that polarized absorption in triply charged dots exhibits anomalous spin-dependent features, resulting from the intrinsic correlations in charged exciton X-3.

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页数：5

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共 30 条

[1] Quantum-dot spin-state preparation with near-unity fidelity [J].

Atatüre, M ;

Dreiser, J ;

Badolato, A ;

Högele, A ;

Karrai, K ;

Imamoglu, A .

SCIENCE, 2006, 312 (5773) :551-553

[2] Hidden symmetries in the energy levels of excitonic 'artificial atoms' [J].

Bayer, M ;

Stern, O ;

Hawrylak, P ;

Fafard, S ;

Forchel, A .

NATURE, 2000, 405 (6789) :923-926

[3] Nondestructive optical measurements of a single electron spin in a quantum dot [J].

Berezovsky, J. ;

Mikkelsen, M. H. ;

Gywat, O. ;

Stoltz, N. G. ;

Coldren, L. A. ;

Awschalom, D. D. .

SCIENCE, 2006, 314 (5807) :1916-1920

[4] Coherent spectroscopy of optically gated charged single InGaAs quantum dots [J].

Besombes, L ;

Baumberg, JJ ;

Motohisa, J .

PHYSICAL REVIEW LETTERS, 2003, 90 (25) :4

[5] Optical pumping of the electronic and nuclear spin of single charge-tunable quantum dots [J].

Bracker, AS ;

Stinaff, EA ;

Gammon, D ;

Ware, ME ;

Tischler, JG ;

Shabaev, A ;

Efros, AL ;

Park, D ;

Gershoni, D ;

Korenev, VL ;

Merkulov, IA .

PHYSICAL REVIEW LETTERS, 2005, 94 (04) :1-4

[6] Recipes for spin-based quantum computing [J].

Cerletti, V ;

Coish, WA ;

Gywat, O ;

Loss, D .

NANOTECHNOLOGY, 2005, 16 (04) :R27-R49

[7] Quantum Hall droplet at excitonic filling factor ν=2 in a self-assembled quantum dot -: art. no. 035326 [J].

Cheng, SJ ;

Hawrylak, P .

PHYSICAL REVIEW B, 2006, 73 (03)

[8] Electronic structure of the p-shell in single, site-selected InAs/InP quantum dots [J].

Chithrani, D ;

Korkusinski, M ;

Cheng, SJ ;

Hawrylak, P ;

Williams, RL ;

Lefebvre, J ;

Poole, PJ ;

Aers, GC .

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 2005, 26 (1-4) :322-326

[9] Optically driven spin memory in n-doped InAs-GaAs quantum dots -: art. no. 207401 [J].

Cortez, S ;

Krebs, O ;

Laurent, S ;

Senes, M ;

Marie, X ;

Voisin, P ;

Ferreira, R ;

Bastard, G ;

Gérard, JM ;

Amand, T .

PHYSICAL REVIEW LETTERS, 2002, 89 (20)

[10] 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)