Spin Decoherence of Electrons and Holes in Semiconductor Quantum Dots

A. Poszwa

Iván Favero, Philippe Roussignol

Meisam Memarzadeh, Mostafa Sahrai, Hamid Reza Hamedi

Daniel Brunner, Brian D. Gerardot, Paul A. Dalgarno +5 more

A Hole New Approach Quantum dots can behave as artificial atoms, exhibiting a ladder of quantized energy levels with the number of electrons added to the dot being controllable. They are thus being extensively studied for application in the likes of quantum information processing strategies. However, the electrons interact with their environment and quickly lose their coherence properties. Brunner et al. (p. 70 ; see the Perspective by Kolodrubetz and Petta ) now show that if the charge of the dot is manipulated so that it is positive; that is, populated with a single hole, then the coherence properties of the dot can be extended. The strategy of using holes instead of electrons may provide a solution to the decoherence problem.

Oliver J. Benson, F. Henneberger

Preface Spin and Charge Qubits 1. Coded Qubit Based on Electron Spin M. Korkusinski and P. Hawrylak 2. Quantum Optical Studies of Single Coupled Quantum Dot Pairs G. J. Beirne, M. Jetter, and P. Michler 3. Nuclear Spin Bi-stability in Semiconductor Quantum Dots A. I. Tartakovskii, M. S. Skolnick, A. Russell, and V. I. Fal'ko 4. Nonequilibrium Optical Spin Cooling in Charged Quantum Dots I. A. Akimov, D. H. Feng, and F. Henneberger Qubit Control, Readout, and Transfer 5. Electron Spin Quantum Bits in Quantum Dots: Initialization, Decoherence, and Control A. Greilich, D. R. Yakovlev, M. Bayer, A. Shabaev, and A. L. Efros 6. Optical Control of Quantum-Dot Spin States M. Atat ure, J. Dreiser, A. Badolato, and A. Imamo_glu 7. Optical Read-out of Single Carrier Spin in Semiconductor Quantum Dots F. Troiani, I. Wilson-Rae, and C. Tejedor 8. Quantum State Transfer from a Photon to an Electron Spin in Quantum Dots and Quantum Dynamics of Electron-Nuclei Coupled System T. Takagahara and O. ^ Cakir Qubit Decoherence 9. Spin Quantum-bits and Decoherence in InAs/GaAs Quantum Dots B. Urbaszek, T. Amand, O. Krebs, P. Renucci, and X. Marie 10. Electron and Hole Spin Dynamics and Decoherence in Quantum Dots D. Klauser, D. V. Bulaev, W. A. Coish, and D. Loss 11. Microscopic Theory of Energy Dissipation and Decoherence in Semiconductor Nanodevices F. Rossi 12. Transient Four-wave Mixing of Excitons in Quantum Dots from Ensembles and Individuals P. Borri and W. Langbein Flying Qubits 13. Light-matter Interaction in Single Quantum Dot - Micropillar Cavity Systems S. Reitzenstein, J.-P. Reithmaier, and A. Forchel 14. Entangled Photons via Biexciton-Resonant Hyperparemetric Scattering K. Edamatsu 15. Entangled Photon Pair Emission and Interference from Single Quantum Dots R. M. Stevenson, R. J. Young, and A. J. Shields Qubit Applications 16. Telecom-wavelength Single-photon Sources Based on Single Quantum Dots M. B. Ward, A. J. Shields, B. Alloing, C. Zinoni, C. Monat, and A. Fiore 17. Quantum Information Processing with Quantum Dots in Photonic Crystals J. Vu_ckovi_c, D. Englund, A. Faraon, I. Fushman, and E. Waks 18. High-Speed Quantum Computers with Semiconductor Spins T. D. Ladd, K. Sanaka, K. M. C. Fu, S. Koseki, D. Press, S. M. Clark, K. De Greve, and Y. Yamamoto 19. Quantum Dots: Single-Photon Sources for Quantum Information M. Scholz, T. Aichele, and O. Benson Author Index Subject Index

Seigo Tarucha, Michihisa Yamamoto, A. Oiwa +2 more