509 citations · 706 across the 6 of their papers we have counts for
6 papers
Ultrafast Enhancement of Ferromagnetism via Photoexcited Holes in GaMnAs
J. Wang, I. Cotoros, K. M. Dani +3
We report on the observation of ultrafast photo-enhanced ferromagnetism in GaMnAs. It is manifested as a transient magnetization increase on a 100-ps time scale, after an initial s…
Ultrafast Nonlinear Optical Response of Strongly Correlated Systems: Dynamics in the Quantum Hall Effect Regime
A. T. Karathanos, I. E. Perakis, N. A. Fromer +1
We present a theoretical formulation of the coherent ultrafast nonlinear optical response of a strongly correlated system and discuss an example where the Coulomb correlations domi…
Macroscopically ordered state in exciton system
L. V. Butov, A. C. Gossard, D. S. Chemla
Macroscopically ordered arrays of vortices in quantum liquids, such as superconductors, He-II, and atom Bose-Einstein Condensates (BEC), demonstrate macroscopic coherence in flowin…
Parity forbidden excitations of Sr2CuO2Cl2 revealed by optical third-harmonic spectroscopy
A. B. Schumacher, J. S. Dodge, M. A. Carnahan +3
We present the first study of nonlinear optical third harmonic generation in the strongly correlated charge-transfer insulator Sr2CuO2Cl2. For fundamental excitation in the near-in…
Electronic Dephasing in the Quantum Hall Regime
N. A. Fromer, C. Schüller, D. S. Chemla +4
By means of degenerate four-wave mixing (FWM), we investigate the quantum coherence of electron-hole pairs in the presence of a two-dimensional electron gas in modulation-doped GaA…
Femtosecond Coherent Dynamics of the Fermi Edge Singularity and Exciton Hybrid
T. V. Shahbazyan, N. Primozich, I. E. Perakis +1
We study theoretically the coherent nonlinear optical response of doped semiconductors with partially occupied subbands. When the Fermi energy of an occupied subband approaches the…