Report
Quantum dot single photon sources with ultra-low multi-photon probability
| العنوان: | Quantum dot single photon sources with ultra-low multi-photon probability |
|---|---|
| المؤلفون: | Lukas Hanschke, Kevin A. Fischer, Stefan Appel, Daniil Lukin, Jakob Wierzbowski, Shuo Sun, Rahul Trivedi, Jelena Vučković, Jonathan J. Finley, Kai Müller |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | Physics (arXiv), quant-ph (arXiv), cond-mat.mes-hall (arXiv), physics.optics (arXiv) |
| الوصف: | High-quality sources of single photons are of paramount importance for quantum communication, sensing and metrology. To these ends, resonantly excited two-level systems based on self-assembled quantum dots have recently generated widespread interest. Nevertheless, we have recently shown that for resonantly excited two-level systems, emission of a photon during the presence of the excitation laser pulse and subsequent re-excitation results in a degradation of the obtainable single-photon purity. Here, we demonstrate that generating single photons from self-assembled quantum dots with a scheme based on two-photon excitation of the biexciton strongly suppresses the re-excitation. Specifically, the pulse-length dependence of the multi-photon error rate reveals a quadratic dependence in contrast to the linear dependence of resonantly excited two-level systems, improving the obtainable multi-photon error rate by several orders of magnitude for short pulses. We support our experiments with a new theoretical framework and simulation methodology to understand few-photon sources. |
| نوع الوثيقة: | report |
| اللغة: | unknown |
| Relation: | https://figshare.com/articles/preprint/Quantum_dot_single_photon_sources_with_ultra-low_multi-photon_probability/24670629 |
| DOI: | 10.48550/arxiv.1801.01672 |
| الاتاحة: | https://doi.org/10.48550/arxiv.1801.01672 https://figshare.com/articles/preprint/Quantum_dot_single_photon_sources_with_ultra-low_multi-photon_probability/24670629 |
| Rights: | CC0 |
| رقم الانضمام: | edsbas.57941C6D |
| قاعدة البيانات: | BASE |
| DOI: | 10.48550/arxiv.1801.01672 |
|---|