Zobrazeno 1 - 10
of 257
pro vyhledávání: '"Cundiff S"'
Publikováno v:
Phys. Rev. Lett. 123, 067402 (2019)
We report experiments demonstrating Quantum Interference Control (QuIC) based on two nonlinear optical absorption processes in semiconductors. We use two optical beams of frequencies $\omega$ and $3\omega /2$ incident on AlGaAs and measure the inject
Externí odkaz:
http://arxiv.org/abs/1808.07523
Publikováno v:
Phys. Rev. B 100, 075202 (2019)
Quantum interference between optical absorption processes can excite carriers with a polarized distribution in the Brillouin zone depending on properties of the incident optical fields. The polarized distribution of carriers introduces a current that
Externí odkaz:
http://arxiv.org/abs/1808.06673
Publikováno v:
Phys. Rev. Lett. 123, 057403 (2019)
We perform two-dimensional coherent spectroscopy on CdSe/CdZnS core/shell colloidal quantum dots at cryogenic temperatures. In the two-dimensonal spectra, sidebands due to electronic coupling with CdSe lattice LO-phonon modes are observed that have e
Externí odkaz:
http://arxiv.org/abs/1806.06112
In a recent paper [Phys.~Rev.~A {\bf 91}, 053844 (2015)], Mukamel and Dorfman compare spectroscopies performed with classical vs.~quantum light, and conclude that \textit{nonlinear} quantum-spectroscopy signals cannot be obtained from averaging their
Externí odkaz:
http://arxiv.org/abs/1507.01790
Autor:
Moody, G., Akimov, I. A., Li, H., Singh, R., Yakovlev, D. R., Karczewski, G., Wiater, M., Wojtowicz, T., Bayer, M., Cundiff, S. T.
Publikováno v:
Phys. Rev. Lett. 112, 097401 (2014)
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
Externí odkaz:
http://arxiv.org/abs/1308.2165
Autor:
Moody, G., Singh, R., Li, H., Akimov, I. A., Bayer, M., Reuter, D., Wieck, A. D., Cundiff, S. T.
Publikováno v:
Phys. Rev. B 87, 045313 (2013)
Exciton, trion and biexciton dephasing rates are measured within the inhomogeneous distribution of an InAs quantum dot (QD) ensemble using two-dimensional Fourier-transform spectroscopy. The dephasing rate of each excitonic state is similar for all Q
Externí odkaz:
http://arxiv.org/abs/1210.8096
The effect of a constant electric field on two-photon absorption in a direct band gap semiconductor is calculated using an independent-particle theory. Two band structure models for GaAs are used: a two-band parabolic model and an eight-band "k dot p
Externí odkaz:
http://arxiv.org/abs/1010.3920
Autor:
Wahlstrand, J. K., Zhang, H., Choi, S. B., Kannan, S., Dessau, D. S., Sipe, J. E., Cundiff, S. T.
In (100)-oriented GaAs illuminated at normal incidence by a laser and its second harmonic, interference between one- and two-photon absorption results in ballistic current injection, but not modulation of the overall carrier injection rate. Results f
Externí odkaz:
http://arxiv.org/abs/1008.1893
Publikováno v:
Phys. Rev. A, 82, 052503 (2010)
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-rephasing spectra of the D1 and D2 transitions are obtained and compared
Externí odkaz:
http://arxiv.org/abs/1001.1955
Autor:
Smith, R. P., Wahlstrand, J. K., Funk, A. C., Mirin, R. P., Cundiff, S. T., Steiner, J. T., Schafer, M., Kira, M., Koch, S. W.
Publikováno v:
Phys. Rev. Lett. 104, 247401 (2010)
Detailed electronic many-body configurations are extracted from quantitatively measured timeresolved nonlinear absorption spectra of resonantly excited GaAs quantum wells. The microscopic theory assigns the observed spectral changes to a unique mixtu
Externí odkaz:
http://arxiv.org/abs/0912.2787