Optically mapping the electronic structure of coupled quantum dots

Nature Physics

Volumn 4, Issue 4, 2008, Pages 291-295

  Scheibner, M ^a   Yakes, M ^a   Bracker, A S ^a   Ponomarev, I V ^a   Doty, M F ^a   Hellberg, C S ^a   Whitman, L J ^a   Reinecke, T L ^a   Gammon, D ^a  

^a NAVAL RESEARCH LABORATORY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ELECTRONIC STRUCTURE; EXCITED STATES; III-V SEMICONDUCTORS; INDIUM ARSENIDE; MOLECULAR ORBITALS; NANOCRYSTALS; QUANTUM OPTICS; REVERSE ENGINEERING;

ATOMIC RESOLUTION MICROSCOPY; COLLECTIVE PROPERTIES; COUPLED QUANTUM DOTS; ELECTRONIC STRUCTURE THEORY; INAS/GAAS QUANTUM DOTS; ORBITAL ENERGY LEVELS; QUANTUM INFORMATION TECHNOLOGIES; SEMICONDUCTOR STRUCTURE;

SEMICONDUCTOR QUANTUM DOTS;

EID: 41549159307     PISSN: 17452473     EISSN: 17452481     Source Type: Journal    
DOI: 10.1038/nphys882     Document Type: Article

References (30)

1. Stangl, J., Holý, V. & Baur, G. Structural properties of self-organized semiconductor nanostructures. Rev. Mod. Phys. 76, 725-783 (2004).
2. Biolatti, E., Iotti, R. C., Zanardi, P. & Rossi, F. Quantum information processing with semiconductor macroatoms. Phys. Rev. Lett. 85, 5647-5650 (2000).
3. Unold, T., Mueller, K., Lienau, C., Elsaesser, T. & Wieck, A. D. Optical control of excitons in a pair of quantum dots coupled by the dipole-dipole interaction. Phys. Rev. Lett. 94, 137404 (2005).
4. Emary, C. & Sham, L. J. Optically controlled logic gates for two spin qubits in vertically coupled quantum dots. Phys. Rev. B 75, 125317 (2007).
5. Imamoǧlu, A. et al. Coupling quantum dot spins to a photonic crystal nanocavity. J. Appl. Phys. 101, 081602 (2007).
6. Jacac, L., Hawrylak, P. & Wójs, A. Quantum Dots (Springer, Berlin, 1998).
7. Bimberg, D., Grundmann, M. & Ledentsov, N. N. Quantum Dot Heterostructures (Wiley, New York, 1998).
8. Bayer, M., Stern, O., Hawrylak, P., Fafard, S. & Forchel, A Hidden symmetries in the energy levels of exdtonic 'artifidal atoms'. Nature 405, 923-926 (2000).
9. Drexler, H., Leonard, D., Hansen, W., Kotthaus, J. P. & Petroff, P. M. Spectroscopy of quantum levels in charge-tunable InGaAs quantum dots. Phys. Rev. Lett. 73, 2252-2255 (1994).
10. Blokland, J. H. et al. Hole levels in InAs self-assembled quantum dots. Phys. Rev. B 75, 233305 (2007).
11. Narvaez, G. A. & Zunger, A. Calculation of conduction-to-conduction and valence-to-valence transitions between bound states in (In,Ga)As/GaAs quantum dots. Phys. Rev. B 75, 085306 (2007).
12. Ediger, M. et al. Peculiar many-body effects revealed in the spectroscopy of highly charged quantum dots. Nature Phys. 3, 774-779 (2007).
13. Stinaff, E. A. et al. Optical signatures of coupled quantum dots. Science 311, 636-639 (2006).
14. Bracker, A. S. et al. Engineering electron and hole tunneling with asymmetric InAs quantum dot molecules. Appl. Phys. Lett. 89, 233110 (2006).
15. Scheibner, M. et al. Spin fine structure of optically excited quantum dot molecules. Phys. Rev. B 75, 245318 (2007).
16. Scheibner, M. et al. Photoluminescence spectroscopy of the molecular biexdton in vertically stacked InAs-GaAs quantum dot pairs. Phys. Rev. Lett. 99, 197402 (2007).
17. Krenner, H. J. et al. Direct observation of controlled coupling in an individual quantum dot molecule. Phys. Rev. Lett. 94, 057402 (2005).
18. Ortner, G. et al. Control of vertically coupled InGaAs/GaAs quantum dots with electric field. Phys. Rev. Lett. 94, 157401 (2005).
19. Krenner, H. J. et al. Optically probing spin and charge interactions in a tunable artifidal molecule. Phys. Rev. Lett. 97, 076403 (2006).
20. Szafran, B., Peeters, F. M. & Bednarek, S. Stark effect on the exdton spectra of vertically coupled quantum dots: Horizontal field orientation and nonaligned dots. Phys. Rev. B 75, 115303 (2007).
21. Degani, M. H. & Maialle, M. Z Resonances of trion states in quantum dot molecules tuned by an electric field. Phys. Rev. B 75, 115322 (2007).
22. Bester, G. & Zunger, A. Electric field control and optical signature of entanglement in quantum dot molecules. Phys. Rev. B 72, 165334 (2005).
23. Bdrne, G. J. et al. Quantum light emission of two lateral tunnel-coupled (In,Ga)As/GaAs quantum dots controlled by a tunable static electric field. Phys. Rev. Lett. 96, 137401 (2006).
24. Xie, Q., Madhukar, A., Chen, P. & Kobayashi, N. P. Vertically self-organized InAs quantum box islands on GaAs(100). Phys. Rev. Lett. 75, 2542-2545 (1995).
25. Bruls, D. M. et al. Stacked low-growth-rate InAs quantum dots studied at the atomic level by cross-sectional scanning tunneling microscopy. Appl. Phys. Lett. 82, 3758-3760 (2003).
26. Solomon, G. S., Komarov, S., Harris, J. S. Jr & Yamamoto, Y. Increased size uniformity through vertical quantum dot columns. J. Cryst. Growth 175-176, 707-712 (1997).
27. Jaskólski, W., Zielinski, M., Bryant, G. W. & Aizpurua, J. Strain effects on the electronic structure of strongly coupled self-assembled InAs/GaAs quantum dots: Tight-binding approach. Phys. Rev. B 74, 195339 (2006).
28. Garda, J. M. et al. Intermixing and shape changes during the formation of InAs self-assembled quantum dots. Appl. Phys. Lett. 71, 2014-2016 (1997).
29. Wasilewski, Z. R., Fafard, S. & McCaffrey, J. P. Size and shape engineering of vertically stacked self-assembled quantum dots. J. Cryst. Growth 201-202, 1131-1135 (1999).
30. Nosho, B. Z., Bar vosa-Carter, W., Yang, M. J., Bennett, B. R. & Whitman, L. J. Interpreting interfacial structure in cross-sectional STM images of III-V semiconductor heterostructures. Surf Sci. 465, 361-371 (2000).