期刊
APPLIED PHYSICS LETTERS
卷 103, 期 24, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4845975
关键词
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资金
- UK Engineering and Physical Sciences Research Council [EP/G001642, EP/J007544, EP/G004366/1]
- Project SPANGL4Q, under FET-Open Grant [FP7-284743]
- Engineering and Physical Sciences Research Council [EP/G004366/1, EP/J007544/1] Funding Source: researchfish
- EPSRC [EP/J007544/1, EP/G004366/1] Funding Source: UKRI
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 spina 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%. (C) 2013 AIP Publishing LLC.
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