تقرير
Near-unity coupling efficiency of a quantum emitter to a photonic-crystal waveguide
| العنوان: | Near-unity coupling efficiency of a quantum emitter to a photonic-crystal waveguide |
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| المؤلفون: | Arcari, M., Söllner, I., Javadi, A., Hansen, S. Lindskov, Mahmoodian, S., Liu, J., Thyrrestrup, H., Lee, E. H., Song, J. D., Stobbe, S., Lodahl, P. |
| المصدر: | Phys. Rev. Lett. 113, 093603, (2014) |
| سنة النشر: | 2014 |
| المجموعة: | Physics (Other) Quantum Physics |
| مصطلحات موضوعية: | Quantum Physics, Physics - Optics |
| الوصف: | A quantum emitter efficiently coupled to a nanophotonic waveguide constitutes a promising system for the realization of single-photon transistors, quantum-logic gates based on giant single-photon nonlinearities, and high bit-rate deterministic single-photon sources. The key figure of merit for such devices is the $\beta$-factor, which is the probability for an emitted single photon to be channeled into a desired waveguide mode. We report on the experimental achievement of $\beta = 98.43 \pm 0.04\%$ for a quantum dot coupled to a photonic-crystal waveguide, corresponding to a single-emitter cooperativity of $\eta = 62.7 \pm 1.5$. This constitutes a nearly ideal photon-matter interface where the quantum dot acts effectively as a 1D "artificial" atom, since it interacts almost exclusively with just a single propagating optical mode. The $\beta$-factor is found to be remarkably robust to variations in position and emission wavelength of the quantum dots. Our work demonstrates the extraordinary potential of photonic-crystal waveguides for highly efficient single-photon generation and on-chip photon-photon interaction. |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevLett.113.093603 |
| الوصول الحر: | http://arxiv.org/abs/1402.2081Test |
| رقم الانضمام: | edsarx.1402.2081 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevLett.113.093603 |
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