Semiconductor Quantum Bits

Providing an extensive overview of a newly emerging field, this examination highlights the state-of-the-art qubit implementations in semiconductors. With contributions from leading experts in the field, the volume reports cutting-edge results on spin qubit preparation, read-out, and transfer. The latest theoretical as well as experimental studies of decoherence in these quantum information systems are also provided, as are novel demonstrations of complex flying qubit states and first applications of semiconductor-based quantum information devices.

This book highlights state-of-the-art qubit implementations in semiconductors and provides an extensive overview of this newly emerging field. Semiconductor nanostructures have huge potential as future quantum information devices as they provide various ways of qubit implementation (electron spin, electronic excitation) as well as a way to transfer quantum information from stationary qubits to flying qubits (photons). Therefore, this book unites contributions from leading experts in the field, reporting cutting-edge results on spin qubit preparation, read-out and transfer. The latest theoretical as well as experimental studies of decoherence in these quantum information systems are also provided. Novel demonstrations of complex flying qubit states and first applications of semiconductor-based quantum information devices are given, too.

PrefaceSpin and Charge Qubits1. Coded Qubit Based on Electron SpinM. Korkusinski and P. Hawrylak2. Quantum Optical Studies of Single Coupled QuantumDot PairsG. J. Beirne, M. Jetter, and P. Michler3. Nuclear Spin Bi-stability in Semiconductor Quantum DotsA. I. Tartakovskii, M. S. Skolnick, A. Russell, and V. I. Fal'ko4. Nonequilibrium Optical Spin Cooling in ChargedQuantum DotsI. A. Akimov, D. H. Feng, and F. HennebergerQubit Control, Readout, and Transfer5. Electron Spin Quantum Bits in Quantum Dots:Initialization, Decoherence, and ControlA. Greilich, D. R. Yakovlev, M. Bayer, A. Shabaev, andA. L. Efros6. Optical Control of Quantum-Dot Spin StatesM. Atat ure, J. Dreiser, A. Badolato, and A. Imamo_glu7. Optical Read-out of Single Carrier Spin inSemiconductor Quantum DotsF. Troiani, I. Wilson-Rae, and C. Tejedor8. Quantum State Transfer from a Photon to anElectron Spin in Quantum Dots and QuantumDynamics of Electron-Nuclei Coupled SystemT. Takagahara and O. ^ CakirQubit Decoherence9. Spin Quantum-bits and Decoherence in InAs/GaAsQuantum DotsB. Urbaszek, T. Amand, O. Krebs, P. Renucci, and X. Marie10. Electron and Hole Spin Dynamics and Decoherence inQuantum DotsD. Klauser, D. V. Bulaev, W. A. Coish, and D. Loss11. Microscopic Theory of Energy Dissipation andDecoherence in Semiconductor NanodevicesF. Rossi12. Transient Four-wave Mixing of Excitons in QuantumDots from Ensembles and IndividualsP. Borri and W. LangbeinFlying Qubits13. Light-matter Interaction in Single Quantum Dot -Micropillar Cavity SystemsS. Reitzenstein, J.-P. Reithmaier, and A. Forchel14. Entangled Photons via Biexciton-ResonantHyperparemetric ScatteringK. Edamatsu15. Entangled Photon Pair Emission and Interference fromSingle Quantum DotsR. M. Stevenson, R. J. Young, and A. J. ShieldsQubit Applications16. Telecom-wavelength Single-photon Sources Based onSingle Quantum DotsM. B. Ward, A. J. Shields, B. Alloing, C. Zinoni,C. Monat, and A. Fiore17. Quantum Information Processing with Quantum Dotsin Photonic CrystalsJ. Vu_ckovi_c, D. Englund, A. Faraon,I. Fushman, and E. Waks18. High-Speed Quantum Computers with Semiconductor SpinsT. D. Ladd, K. Sanaka, K. M. C. Fu, S. Koseki,D. Press, S. M. Clark, K. De Greve, and Y. Yamamoto19. Quantum Dots: Single-Photon Sources forQuantum InformationM. Scholz, T. Aichele, and O. BensonAuthor IndexSubject Index

Fritz Henneberger currently occupies the Chair of Photonics at Humboldt-Universität zu Berlin. His research comprises semiconductor lasers, photonic materials and nanostructures, as well as elementary excitations and their dynamical interactions in semiconductors. He is a recipient of the Heinrich-Hertz Award of the Germany Physical Society. Henneberger has been a staff member of the Ioffe Institute, Leningrad, for several years. He has been a visiting professor at the Optical Science Center, University of Arizona, USA, and Kyoto University, Japan.