Mapping between quantum dot and quantum well lasers: From conventional to spin lasers

J Lee, R Oszwałdowski, C Gøthgen, I Žutić - Physical Review B—Condensed …, 2012 - APS
We explore similarities between the quantum wells and quantum dots used as optical gain
media in semiconductor lasers. We formulate a mapping procedure which allows a simpler …

Temperature dependence of the dynamics of optical spin injection in self-assembled InGaAs quantum dots

T Kiba, X Yang, T Yamamura, Y Kuno… - Applied Physics …, 2013 - pubs.aip.org
We report the temperature dependence of the dynamics of optical spin injection from GaAs
barriers into self-assembled quantum dots (QDs) of In 0.5 Ga 0.5 As. Transient circular …

Electric field control of spin polarity in spin injection into InGaAs quantum dots from a tunnel-coupled quantum well

H Chen, S Hiura, J Takayama, S Park… - Applied Physics …, 2019 - pubs.aip.org
Electric field control of spin polarity in spin injection into InGaAs quantum dots (QDs) from a
tunnel-coupled quantum well (QW) was studied. The degree of freedom of the spin state in …

Suppression of thermally excited electron-spin relaxation in InGaAs quantum dots using p-doped capping layers toward enhanced room-temperature spin polarization

S Sato, S Hiura, J Takayama, A Murayama - Applied Physics Letters, 2020 - pubs.aip.org
The suppression of a thermally excited electron-spin relaxation in InGaAs quantum dots
(QDs) using p-doped capping layers toward enhanced room-temperature (RT) spin …

Electric-field-effect spin switching with an enhanced number of highly polarized electron and photon spins using p-doped semiconductor quantum dots

S Park, H Chen, S Hiura, J Takayama, K Sueoka… - ACS …, 2021 - ACS Publications
Electric-field-effect spin switching with an enhanced number of highly polarized electron and
photon spins has been demonstrated using p-doped semiconductor quantum dots (QDs) …

Power-dependent spin amplification in (In, Ga) As/GaAs quantum well via Pauli blocking by tunnel-coupled quantum dot ensembles

SL Chen, T Kiba, XJ Yang, J Takayama… - Applied physics …, 2016 - pubs.aip.org
Power-dependent time-resolved optical spin orientation measurements were performed on
In 0.1 Ga 0.9 As quantum well (QW) and In 0.5 Ga 0.5 As quantum dot (QD) tunnel-coupled …

Negative circular polarization as a universal property of quantum dots

MW Taylor, P Spencer, R Murray - Applied Physics Letters, 2015 - pubs.aip.org
This paper shows that negative circular polarization, a spin flip of polarized carriers resulting
in emission of opposite helicity, can be observed in undoped, n-doped, and p-doped …

Tuning exciton g-factors in InAs/GaAs quantum dots

MW Taylor, P Spencer, E Clarke… - Journal of Physics D …, 2013 - iopscience.iop.org
Exciton g-factors have been measured for a series of single and bilayer InAs/GaAs
semiconductor quantum dot (QD) ensembles emitting at wavelengths in the range 1150 …

Nonlinear dynamics in quantum photonic structures

G Slavcheva, M Koleva - Handbook of optoelectronic device …, 2017 - taylorfrancis.com
Quantum optics unites physical optics and the quantum field theory of light. A fundamental
consequence of light-field quantization is the appearance of vacuum fluctuations, or …

Resolving Zeeman splitting in quantum dot ensembles

MW Taylor, P Spencer, E Clarke, E Harbord… - Applied Physics …, 2013 - pubs.aip.org
This letter presents a technique for the investigation of the fine structure and spin properties
of quantum dot (QD) ensembles, allowing measurement of QD parameters previously …