Projects per year
Using the helicity of a non-resonant excitation laser, control over the emission direction of an InAs/GaAs quantum dot is demonstrated. The quantum dot is located off-center in a crossed-waveguide structure, such that photons of opposite circular polarization are emitted into opposite waveguide directions. By preferentially exciting spin-polarized excitons, the direction of emission can therefore be controlled. The directional control is quantified by using the ratio of the intensity of the light coupled into the two waveguides, which reaches a maximum of ±35%.
|Number of pages||3|
|Journal||Applied Physics Letters|
|Publication status||Published - 9 Dec 2013|
- quantum dot
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- 1 Finished
- 1 Fellowship awarded competitively
Career Acceleration Fellowship
Ruth Oulton (Recipient)1 Oct 2008
Activity: Other activity types › Fellowship awarded competitively
HPC (High Performance Computing) Facility
Sadaf R Alam (Manager), Steven A Chapman (Manager), Polly E Eccleston (Other), Simon H Atack (Other) & D A G Williams (Manager)