128 citations · 622 across the 16 of their papers we have counts for
7 papers · 1 filter
Surface quantum dots with pure, coherent, and blinking-free single photon emission
Xin Cao, Jingzhong Yang, Pengji Li +14
The surface of semiconductor nanostructures has a major impact on their electronic and optical properties. Disorder and defects in the surface layer typically cause degradation of…
Deterministic preparation of spin qubits in droplet etched GaAs quantum dots using quasi-resonant excitation
Caspar Hopfmann, Nand Lal Sharma, Weijie Nie +3
We present a first comprehensive study on deterministic spin preparation employing excited state resonances of droplet etched GaAs quantum dots. This achievement facilitates future…
Tuning emission energy and fine structure splitting in quantum dots emitting in the telecom O-band
Bianca Höfer, Fabian Olbrich, Jan Kettler +7
We report on optical investigations of MOVPE-grown InGaAs/GaAs quantum dots emitting at the telecom O-band that were integrated onto uniaxial piezoelectric actuators. This promisin…
Measurement of the spin temperature of optically cooled nuclei and GaAs hyperfine constants in GaAs/AlGaAs quantum dots
E. A. Chekhovich, A. Ulhaq, E. Zallo +3
Deep cooling of electron and nuclear spins is equivalent to achieving polarization degrees close to 100% and is a key requirement in solid state quantum information technologies. W…
Energy-tunable entangled photon sources on a III-V/Silicon chip
Yan Chen, Jiaxiang Zhang, Michael Zopf +4
Many of the envisioned quantum photonic technologies, e.g. a quantum repeater, rely on an energy- (wavelength-) tunable source of polarization entangled photon pairs. The energy tu…
Electron and nuclear spin properties of the nanohole-filled GaAs/AlGaAs quantum dots
Ata Ulhaq, Qingqing Duan, Fei Ding +5
GaAs/AlGaAs quantum dots grown by in-situ droplet etching and nanohole infilling offer a combination of strong charge confinement, optical efficiency, and spatial symmetry required…
Effects of variable anisotropic-strain on the emission of neutral excitons confined in epitaxial quantum dots
J. D. Plumhof, V. Krapek, F. Ding +8
We study the effect of elastic anisotropic biaxial strain on the light emitted by neutral excitons confined in different kinds of semiconductor quantum dots (QDs). We find that the…