期刊
PHYSICAL REVIEW B
卷 85, 期 15, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.85.155310
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资金
- EPSRC (UK) [EP/G001642]
- QIPIRC UK
- CONACYT-Mexico
- EPSRC [EP/G001642/1, EP/J007544/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/G001642/1, EP/J007544/1] Funding Source: researchfish
The preparation of a coherent heavy-hole spin via ionization of a spin-polarized electron-hole pair in an InAs/GaAs quantum dot in a Voigt geometry magnetic field is experimentally investigated. For a dot with a typical bright-exciton fine-structure splitting of 17 mu eV, the fidelity of the spin preparation is limited to 0.75, with optimum preparation occurring when the effective fine structure of the bright exciton matches the in-plane hole Zeeman energy. In principle, higher fidelities can be achieved byminimizing the bright-exciton fine-structure splitting.
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