An all-optical quantum gate in a semiconductor quantum dot

X Li, Y Wu, D Steel, D Gammon, TH Stievater… - Science, 2003 - science.org
We report coherent optical control of a biexciton (two electron-hole pairs), confined in a
single quantum dot, that shows coherent oscillations similar to the excited-state Rabi …

Optical Stark effect in a quantum dot: ultrafast control of single exciton polarizations

T Unold, K Mueller, C Lienau, T Elsaesser, AD Wieck - Physical review letters, 2004 - APS
We report the first experimental study of the optical Stark effect in single semiconductor
quantum dots (QD). For below band gap excitation, two-color pump-probe spectra show …

Room-temperature anomalous coherent excitonic optical Stark effect in metal halide perovskite quantum dots

M Shrivastava, F Krieg, D Mandal, AK Poonia… - Nano …, 2022 - ACS Publications
Nonresonant optical driving of confined semiconductors can open up exciting opportunities
for experimentally realizing strongly interacting photon-dressed (Floquet) states through the …

Coherent control and polarization readout of individual excitonic states

B Patton, U Woggon, W Langbein - Physical review letters, 2005 - APS
We present measurements and simulations of coherent control and readout of the
polarization in individual exciton states. The readout is accomplished by transient four-wave …

Impact of pure dephasing on the nonlinear optical response of single quantum dots and dot ensembles

A Vagov, VM Axt, T Kuhn - Physical Review B, 2003 - APS
The nonlinear optical response to ultrafast laser pulses of semiconductor quantum dots
coupled to acoustic phonons is discussed on the basis of closed-form analytical results valid …

Two-qubit conditional quantum-logic operation in a single self-assembled quantum dot

SJ Boyle, AJ Ramsay, F Bello, HY Liu… - Physical Review B …, 2008 - APS
The four-level exciton/biexciton system of a single semiconductor quantum dot acts as a two-
qubit register. We experimentally demonstrate an exciton-biexciton Rabi rotation conditional …

Phonon-induced pure dephasing in exciton-biexciton quantum dot systems driven by ultrafast laser pulse sequences

VM Axt, T Kuhn, A Vagov, FM Peeters - Physical Review B—Condensed Matter …, 2005 - APS
A semiconductor quantum dot model accounting for single exciton as well as biexciton
states coupled to phonons and laser light is investigated in the limit of strong electronic …

Stimulated emission from the biexciton in a single self-assembled II-VI quantum dot

IA Akimov, JT Andrews, F Henneberger - Physical review letters, 2006 - APS
Using two-photon excitation, stimulated emission from the biexciton state in a single
CdSe/ZnSe quantum dot is observed in a two-pulse configuration. We directly time resolve …

Measurement of relaxation between polarization eigenstates in single quantum dots

TH Stievater, X Li, T Cubel, DG Steel… - Applied physics …, 2002 - pubs.aip.org
Low temperature relaxation of excitons between polarization eigenstates in single interface
fluctuation quantum dots is studied using copolarized and cross-polarized transient …

Biexcitonic resonance in the nonlinear optical response of an InAs quantum dot ensemble

AS Lenihan, MVG Dutt, DG Steel, S Ghosh… - Physical Review B, 2004 - APS
Transient spectral hole burning measurements are applied to an ensemble of InAs self-
assembled quantum dots. In addition to the expected exciton hole, we observe an “antihole” …