%0 Journal Article %T Exciton-Trion Coherent Interactions in a CdTe/CdMgTe Quantum Well %A G. Moody %A I. A. Akimov %A H. Li %A R. Singh %A D. R. Yakovlev %A G. Karczewski %A M. Wiater %A T. Wojtowicz %A M. Bayer %A S. T. Cundiff %J Physics %D 2013 %I arXiv %R 10.1103/PhysRevLett.112.097401 %X We present a collection of zero-, one- and two-quantum two-dimensional coherent spectra of excitons and trions in a CdTe/(Cd,Mg)Te quantum well. The set of spectra provides a unique and comprehensive picture of the exciton and trion nonlinear optical response. Exciton-exciton and exciton-trion coherent coupling is manifest as distinct peaks in the spectra, whereas signatures of trion-trion interactions are absent. Excellent agreement using density matrix calculations is obtained, which highlights the essential role of many-body effects on coherent interactions in the quantum well. %U http://arxiv.org/abs/1308.2165v1