Ultrafast optical rotations of electron spins in quantum dots

Nature Physics

Volumn 5, Issue 4, 2009, Pages 262-266

  Greilich, A ^a   Economou, Sophia E ^b   Spatzek, S ^a   Yakovlev, D R ^a,c   Reuter, D ^d   Wieck, A D ^d   Reinecke, T L ^b   Bayer, M ^a  

^a TU DORTMUND UNIVERSITY   (Germany)

^b NAVAL RESEARCH LABORATORY   (United States)

^c IOFFE INSTITUTE   (Russian Federation)

^d RUHR UNIVERSITY BOCHUM   (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

ELECTRONS; NANOCRYSTALS; OPTICAL PUMPING; OPTICAL ROTATION; QUANTUM OPTICS; QUBITS; ROTATION; SEMICONDUCTOR QUANTUM DOTS; SPIN DYNAMICS;

COHERENCE TIME; COHERENT MANIPULATION; CONTROL FIELDS; ELECTRON SPINS; OPTICAL METHODS; QUANTUM-INFORMATION PROCESSING; SPIN COHERENCE; SPIN-ROTATIONS;

ELECTROSPINNING;

EID: 64149093493     PISSN: 17452473     EISSN: 17452481     Source Type: Journal    
DOI: 10.1038/nphys1226     Document Type: Article

References (23)

1. Burkard, G., Engel, H. A. & Loss, D. Spintronics and quantum dots for quantum computing and quantum communication. Prog. Phys. 48, 965-986 (2000).
2. Pryor, C. E. & Flatté, M. E. Predicted ultrafast single-qubit operations in semiconductor quantum dots. Appl. Phys. Lett. 88, 233108 (2006).
3. Atatüre, M. et al. Quantum-dot spin-state preparation with near-unity fidelity. Science 312, 551-553 (2006).
4. Xu, X. et al. Fast spin state initialization in a singly charged InAs/GaAs quantum dot by optical cooling. Phys. Rev. Lett. 99, 097401 (2007).
5. Greilich, A. et al. Mode locking of electron spin coherences in singly charged quantum dots. Science 313, 341-345 (2006).
6. Koppens, F. H. L. et al. Driven coherent oscillations of a single electron spin in a quantum dot. Nature 442, 766-771 (2006).
7. Wu, Y. et al. Selective optical control of electron spin coherence in singly charged GaAs/AlGaAs quantum dots. Phys. Rev. Lett. 99, 097402 (2007).
8. Berezovsky, J., Mikkelsen, M. H., Stoltz, N. G., Coldren, L. A. & Awschalom, D. D. Picosecond coherent optical manipulation of a single electron spin in a quantum dot. Science 320, 349-352 (2008).
9. Press, D., Ladd, T. D., Zhang, B. & Yamamoto, Y. Complete quantum control of a single quantum dot spin using ultrafast optical pulses. Nature 456, 218-221 (2008).
10. Khaetskii, A. V., Loss, D. & Glazman, L. Electron spin decoherence in quantum dots due to interaction with nuclei. Phys. Rev. Lett. 88, 186802 (2002).
11. Merkulov, I. A., Efros, A. L. & Rosen, M. Electron spin relaxation by nuclei in semiconductor quantum dots. Phys. Rev. B 65, 205309 (2002).
12. Greilich, A. et al. Nuclei-induced frequency focusing of electron spin coherence. Science 317, 1896-1899 (2007).
13. Greilich, A. et al. Collective single mode precession of electron spins in a quantum dot ensemble. Preprint at (2008).
14. Yugova, I. A. et al. Exciton fine structure in InGaAs/GaAs quantum dots revisited by pump-probe Faraday rotation. Phys. Rev. B 75, 195325 (2007).
15. Economou, S. E. & Reinecke, T. L. Theory of fast optical spin rotation in a quantum dot based on geometric phases and trapped states. Phys. Rev. Lett. 99, 217401 (2007).
16. Economou, S. E., Sham, L. J., Wu, Y. & Steel, D. G. Proposal for optical U(1) rotations of electron spin trapped in a quantum dot. Phys. Rev. B 74, 205415 (2006).
17. Viola, L. & Lloyd, S. Dynamical suppression of decoherence in two-state quantum systems. Phys. Rev. A 58, 2733-2744 (1998).
18. Morton, J. J. L. et al. Bang-bang control of fullerene qubits using ultrafast phase gates. Nature Phys. 2, 40-43 (2006).
19. Hahn, F. Spin echoes. Phys. Rev. 80, 580-594 (1950).
20. Koppens, F. H. L., Nowack, K. C. & Vandersypen, L. M. K. Spin echo of a single electron spin in a quantum dot. Phys. Rev. Lett. 100, 236802 (2008).
21. Yao, W., Liu, R.-B. & Sham, L. J. Restoring coherence lost to a slow interacting mesoscopic spin bath. Phys. Rev. Lett. 98, 077602 (2007).
22. Witzel, W. M. & Das Sarma, S. Multiple-pulse coherence enhancement of solid state spin qubits. Phys. Rev. Lett. 98, 077601 (2007).
23. Shabaev, A., Efros, A. L., Gammon, D. & Merkulov, I. A. Optical readout and initialization of an electron spin in a single quantum dot. Phys. Rev. B 68, 201305(R) (2003).