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Cavity enhanced Faraday rotation of semiconductor quantum dots

Appl. Phys. Lett. 88, 193126 (2006); doi:10.1063/1.2202393

Published 12 May 2006

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Y. Q. Li, D. W. Steuerman, J. Berezovsky, D. S. Seferos, G. C. Bazan, and D. D. Awschalom
Center for Spintronics and Quantum Computation, University of California, Santa Barbara, California 93106
Dielectric vertical cavities are used to study the spin dynamics of molecularly self-assembled colloidal CdSe quantum dots (QDs). A quality factor dependent enhancement of Faraday rotation (~25×) is observed and attributed to optically excited spins interacting with multiple passes of the cavity photons. This enables dynamical measurements at extremely low powers on relatively small numbers of quantum confined spins. In CdSe QDs, measurements reveal that spectroscopic contributions from exciton and electron spin precession depend on the power of excitation. We demonstrate that this scheme is amenable to chemically synthesized systems as a means to increase detection sensitivity. ©2006 American Institute of Physics
History: Received 13 January 2006; accepted 18 March 2006; published 12 May 2006
Permalink: http://link.aip.org/link/?APPLAB/88/193126/1
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KEYWORDS and PACS

Keywords
PACS
  • 78.20.Ls
    Magnetooptical effects (bulk materials/thin films)
  • 73.21.La
    Quantum dots (electron states/collective excitations)
  • YEAR: 2006

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PUBLICATION DATA

ISSN:
0003-6951 (print)   1077-3118 (online)
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AIP is a member of CrossRef AIP

REFERENCES (19)
View in Separate Window/Tab
  1. A. Ekert and R. Jozsa, Rev. Mod. Phys. 68, 733 (1996).
  2. R. Hanson, L. H. W. van Beveren, I. T. Vink, J. M. Elzerman, W. J. M. Naber, F. H. L. Koppens, L. P. Kouwenhoven, and L. M. K. Vansersypen, Phys. Rev. Lett. 94, 196802 (2005). [MEDLINE]
  3. J. R. Petta, A. C. Johnson, J. M. Taylor, E. A. Laird, A. Jacoby, M. D. Lukin, C. M. Marcus, M. P. Hanson, and A. C. Gossard, Science 309, 2180 (2005). [MEDLINE]
  4. L. Besombes, Y. Léger, L. Maingault, D. Ferrand, H. Mariette, and J. Cibert, Phys. Rev. Lett. 93, 207403 (2004). [ISI] [MEDLINE]
  5. E. M. Purcell, Phys. Rev. 69, 681 (1946).
  6. S. Ghosh, W. H. Wang, F. M. Mendoza, R. C. Myers, X. Li, N. Samarth, A. C. Gossard, and D. D. Awschalom, Nat. Mater. 5, 261 (2006). [MEDLINE]
  7. J. Altmann, R. Baumgart, and C. Weitkamp, Appl. Opt. 20, 995 (1981). [SPIN] [ISI]
  8. E. Takeda, N. Todoroki, Y. Kitamoto, M. Abe, M. Inoue, T. Fujii, and K. Arai, J. Appl. Phys. 87, 6782 (2000).
  9. C. Gourdon, V. Jeudy, M. Menant, D. Roditchev, L. A. Tu, E. L. Ivchenko, and G. Karczewski, Appl. Phys. Lett. 82, 230 (2003).
  10. G. Salis and M. Moser, Phys. Rev. B 72, 115325 (2005).
  11. A. V. Kavokin, M. R. Vladimirova, M. A. Kaliteevski, and O. Lyngnes, Phys. Rev. B 56, 1087 (1997).
  12. D. S. Seferos, D. A. Banach, N. A. Alcantar, J. N. Israelachvili, and G. C. Bazan, J. Org. Chem. 69, 1110 (2004). [MEDLINE]
  13. D. S. Seferos, S. A. Trammell, G. C. Bazan, and J. G. Kushmerick, Proc. Natl. Acad. Sci. U.S.A. 102, 8821 (2005). [MEDLINE]
  14. CdSe core dots are purchased from Evident Technology.
  15. D. I. Babic and S. W. Corzine, IEEE J. Quantum Electron. 28, 514 (1992).
  16. S. A. Crooker, J. J. Baumberg, F. Flack, N. Samarth, and D. D. Awschalom, Phys. Rev. B 56, 7574 (1997).
  17. The dephasing times both decrease as the excitation power increases, but a quantitative assessment is difficult given the uncertainty of the fits.
  18. J. A. Gupta, D. D. Awschalom, A. L. Efros, and A. V. Rodina, Phys. Rev. B 66, 125307 (2002).
  19. N. P. Stern, M. Poggio, M. H. Bartl, E. L. Hu, G. D. Stucky, and D. D. Awschalom, Phys. Rev. B 72, 161303R (2005).

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