Giant exciton-light coupling in large size semiconductor quantum dots


We investigate the strength of the coupling of the electronic states with the electromagnetic field in semiconductor nanospheres, taking into account the retardation effect. We show that the coupling strength is particularly strong: the bulk properties are so enhanced that the radiative decay time can reach some 30 picoseconds for quantum dots sizes of some 30 nm.


  1. 1-

    These values are taken from A. d’Andrea and red. Sole Physical Review B, 38, 1197, (1988), E.L. Ivchenko, A.V. Kavokin, V.P. Kochereshko, G.R. Pozina, I.N. Uraltsev, D.R. Yakovlev, G. Landwehr, R.N. Bicknell, Phys. Rev. B. 46, 7713 (1992), B. Gil, A. Abounadi, M. di Blasio, D. Bouchara, J. Calas, M. Averous, O. Briot, N. Briot, T. Cloitre, R.L. Aulombard and B. Gil, Physical Review B, 50, 11 677, (1994), B. Gil Semiconductors and Semi-metals, vol 57, Chapter 6, 209, (1999), M. Zamfirescu, A. Kavokin, B. Gil, G. Malpuech, and M. Kaliteevski, Phys. Rev. B 65, R161205 (2002)

    Article  Google Scholar 

  2. 2-

    A. Kavokin, G. Malpuech, and W. Langbein, Solid State Commun. 120, 259 (2001)

    CAS  Article  Google Scholar 

  3. 3-

    S. V. Gupalov, E. L. Ivchenko, and A. V. Kavokin, J. Exp. Theor. Phys. 86, 388 (1998)

    Article  Google Scholar 

  4. 4-

    D. J. Norris, A. L. Efros, M. Rosen, and M. G. Bawendi, Phys. Rev. B 53, 16347 (1996)

    CAS  Article  Google Scholar 

  5. 5-

    A. V. Kavokin, Phys. Rev. B 50, 8000 (1994)

    CAS  Article  Google Scholar 

  6. 6-

    E. I. Rashba and G. E. Gurgenishvili, Fiz. Tverd. Tela (Leningrad) 4, 1029 (1962) - Sov. Phys. Solid State 4, 759 (1962)

    CAS  Google Scholar 

  7. 7-

    Note the typing errors in B. Gil and A. Kavokin Appl. Phys. Let., 55, 55, (2002)

    Google Scholar 

  8. 8-

    P. Lefebvre, H. Mathieu, J. Allègre, T Richard, A. Combettes-Roos, M. Pauthe, and W. Granier Semicond. Sci. Technol. 12, 958, (1997).

    CAS  Article  Google Scholar 

Download references

Author information



Corresponding author

Correspondence to Alexey V. Kavokin.

Rights and permissions

Reprints and Permissions

About this article

Verify currency and authenticity via CrossMark

Cite this article

Gil, B., Kavokin, A.V. Giant exciton-light coupling in large size semiconductor quantum dots. MRS Online Proceedings Library 737, 1310 (2002).

Download citation