期刊
PHYSICAL REVIEW B
卷 95, 期 16, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.95.161302
关键词
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资金
- EU FP7 ITN S3NANO
- NCCR QSIT
- SNF project [200020_156637]
- DFH/UFA [CDFA05-06]
- DFG [TRR160]
- BMBF Q.com-H [16KIS0109]
- Swiss National Science Foundation (SNF) [200020_156637] Funding Source: Swiss National Science Foundation (SNF)
A biexciton in a semiconductor quantum dot is a source of polarization-entangled photons with high potential for implementation in scalable systems. Several approaches for nonresonant, resonant, and quasiresonant biexciton preparation exist, but all have their own disadvantages; for instance, low fidelity, timing jitter, incoherence, or sensitivity to experimental parameters. We demonstrate a coherent and robust technique to generate a biexciton in an InGaAs quantum dot with a fidelity close to 1. The main concept is the application of rapid adiabatic passage to the ground-state-exciton-biexciton system. We reinforce our experimental results with simulations which include a microscopic coupling to phonons.
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