Publications (12)
Millisecond spin lifetimes in quantum dots at zero applied magnetic field due to strong electron-nuclear interaction
A. Greilich, R. Oulton, S. Yu. Verbin +7
A key to achieving ultra-long electron spin memory in quantum dots (QDs) at 0~ is the polarization of the nuclei, such that the electron spin is stabilized along the nuclear mag…
Tailored quantum dots for entangled photon pair creation
A. Greilich, M. Schwab, T. Berstermann +7
We compare the asymmetry-induced exchange splitting delta_1 of the bright-exciton ground-state doublet in self-assembled (In,Ga)As/GaAs quantum dots, determined by Faraday rotation…
Optical control of spin coherence in singly charged (In,Ga)As/GaAs quantum dots
A. Greilich, R. Oulton, E. A. Zhukov +9
Electron spin coherence has been generated optically in n-type modulation doped (In,Ga)As/GaAs quantum dots (QDs) which contain on average a single electron per dot. The coherence…
Anomalous Stark Shifts in Single Vertically Coupled Pairs of InGaAs Quantum Dots
R. Oulton, A. I. Tartakovskii, A. Ebbens +4
Vertically coupled Stranski Krastanow QDs are predicted to exhibit strong tunnelling interactions that lead to the formation of hybridised states. We report the results of investig…
Efficient deterministic giant photon phase shift from a single charged quantum dot
P. Androvitsaneas, A. B. Young, J. M. Lennon +8
Solid-state quantum emitters have long been recognised as the ideal platform to realize integrated quantum photonic technologies. We use a self-assembled negatively charged QD in a…
Photon echoes from (In,Ga)As quantum dots embedded in a Tamm-plasmon microcavity
M. Salewski, S. V. Poltavtsev, Yu. V. Kapitonov +9
We report on the coherent optical response from an ensemble of (In,Ga)As quantum dots (QDs) embedded in a planar Tamm-plasmon microcavity with a quality factor of approx. 100. Sign…
The Knight field and the local nuclear dipole-dipole field in an (In,Ga)As quantum dot ensemble
T. Auer, R. Oulton, A. Bauschulte +6
We present a comprehensive investigation of the electron-nuclear system of negatively charged InGaAs/GaAs self-assembled quantum dots under the influence of weak external magnetic…
Evidence of Excitonic Optical Tamm States using Molecular Materials
S. Núñez-Sánchez, M. López-GarcÃa, M. M. Murshidy +6
We report the first experimental observation of an Excitonic Optical Tamm State supported at the interface between a periodic multilayer dielectric structure and an organic dye-dop…
Quantum modulation of a coherent state wavepacket with a single electron spin
P. Androvitsaneas, A. B. Young, T. Nutz +9
The interaction of quantum objects lies at the heart of fundamental quantum physics and is key to a wide range of quantum information technologies. Photon-quantum-emitter interacti…
99% beta factor and directional coupling of quantum dots to fast light in photonic crystal waveguides determined by hyperspectral imaging
L. Scarpelli, B. Lang, F. Masia +8
Spontaneous emission from excitonic transitions in InAs/GaAs quantum dots embedded in photonic crystal waveguides at 5K into non-guided and guided modes is determined by direct hyp…
Conditional phase shift from a quantum dot in a pillar microcavity
A. B. Young, R. Oulton, C. Y. Hu +8
Large conditional phase shifts from coupled atom-cavity systems are a key requirement for building a spin photon interface. This in turn would allow the realisation of hybrid quant…
Direct Measurement of the Radiation Pattern of a Nanoantenna Dipole Array
J. Stokes, P. Bassindale, J. W. Munns +12
Scanning microphotoluminescence is used to characterise the fluorescence from a dye-loaded polymer deposited on a 5 x 5 nanoantenna dipole array. Vertical and horizontal scans show…