145 citations · 571 across the 7 of their papers we have counts for
7 papers
The Quadruplon in a Monolayer Semiconductor
Jiacheng Tang, Hao Sun, Qiyao Zhang +3
Understanding the structure of matter or materials and interaction or correlations among the constituent elementary particles are the central tasks of all branches of science, from…
Prolonging Valley Polarization Lifetime through Gate-Controlled Exciton-to-Trion Conversion in Monolayer Molybdenum Ditelluride
Qiyao Zhang, Hao Sun, Jiacheng Tang +3
Monolayer 2D semiconductors provide an attractive option for valleytronics due to the valley-addressability by helicity-specific light beam. But the short valley lifetime for excit…
Two-dimensional double-quantum spectra reveal collective resonances in an atomic vapor
Xingcan Dai, Marten Richter, Hebin Li +4
We report the observation of double-quantum coherence signals in a gas of potassium atoms at twice the frequency of the one-quantum coherences. Since a single atom does not have a…
Two-dimensional Fourier-transform Spectroscopy of Potassium Vapor
X. Dai, A. D. Bristow, D. Karaiskaj +1
Optical two-dimensional Fourier-transformed (2DFT) spectroscopy is used to study the coherent optical response of potassium vapor in a thin transmission cell. Rephasing and non-rep…
Many-body two-quantum coherences in semiconductor nanostructures
Denis Karaiskaj, Alan D. Bristow, Lijun Yang +4
We present experimental coherent two-dimensional Fourier transform spectra of the exciton resonances in semiconductor quantum wells for a pulse sequence that isolates two-quantum c…
Polarization dependence of semiconductor exciton and biexciton contributions to phase-resolved optical two-dimensional Fourier-transform spectra
Alan D. Bristow, Denis Karaiskaj, Xingcan Dai +2
We study the coherent light-matter interactions of GaAs quantum wells associated with excitons, biexcitons and many-body effects. For most polarization configurations, excitonic fe…
All-optical retrieval of the global phase for two-dimensional Fourier-transform spectroscopy
Alan D. Bristow, Denis Karaiskaj, Xingcan Dai +1
A combination of spatial interference patterns and spectral interferometry are used to find the global phase for non-collinear two-dimensional Fourier-transform (2DFT) spectra. Res…