Nonlinear optical spectroscopy of indirect excitons in coupled quantum wells

P. Andreakou, S. Cronenberger, D. Scalbert, A. Nalitov, N. A. Gippius, A. V. Kavokin, M. Nawrocki, J. R. Leonard, L. V. Butov, K. L. Campman, A. C. Gossard, M. Vladimirova

Research output

16 Citations (Scopus)

Abstract

Indirect excitons in coupled quantum wells are long-living quasiparticles, explored in the studies of collective quantum states. We demonstrate that, despite the extremely low oscillator strength, their spin and population dynamics can by addressed by time-resolved pump-probe spectroscopy. Our experiments make it possible to unravel and compare spin dynamics of direct excitons, indirect excitons, and residual free electrons in coupled quantum wells. Measured spin relaxation time of indirect excitons exceeds not only one of direct excitons but also one of free electrons by two orders of magnitude.
Original languageEnglish
Number of pages7
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume91
Issue number12
DOIs
Publication statusPublished - 2015

Fingerprint Dive into the research topics of 'Nonlinear optical spectroscopy of indirect excitons in coupled quantum wells'. Together they form a unique fingerprint.

  • Cite this

    Andreakou, P., Cronenberger, S., Scalbert, D., Nalitov, A., Gippius, N. A., Kavokin, A. V., Nawrocki, M., Leonard, J. R., Butov, L. V., Campman, K. L., Gossard, A. C., & Vladimirova, M. (2015). Nonlinear optical spectroscopy of indirect excitons in coupled quantum wells. Physical Review B - Condensed Matter and Materials Physics, 91(12). https://doi.org/10.1103/PhysRevB.91.125437