تقرير
Polarization-entangled quantum frequency comb from a silicon nitride microring resonator
| العنوان: | Polarization-entangled quantum frequency comb from a silicon nitride microring resonator |
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| المؤلفون: | Wen, Wenjun, Yan, Wenhan, Lu, Chi, Lu, Liangliang, Wu, Xiaoyu, Lu, Yanqing, Zhu, Shining, Ma, Xiao-song |
| المصدر: | Phys. Rev. Applied 20, 064032 (2023) |
| سنة النشر: | 2023 |
| المجموعة: | Physics (Other) Quantum Physics |
| مصطلحات موضوعية: | Quantum Physics, Physics - Optics |
| الوصف: | Integrated microresonator facilitates the realization of quantum frequency comb (QFC), which provides a large number of discrete frequency modes with broadband spectral range and narrow linewidth. However, all previous demonstrations have focused on the generation of energy-time or time-bin entangled photons from QFC. Realizing polarization-entangled quantum frequency comb, which is the important resource for fundamental study of quantum mechanics and quantum information applications, remains challenging. Here, we demonstrate, for the first time, a broadband polarization-entangled quantum frequency comb by combining an integrated silicon nitride micro-resonator with a Sagnac interferometer. With a free spectral range of about 99 GHz and a narrow linewidth of about 190 MHz, our source provides 22 polarization entangled photons pairs with frequency covering the whole telecom C-band. The entanglement fidelities for all 22 pairs are above 81%, including 17 pairs with fidelities higher than 90%. Our demonstration paves the way for employing the polarization-entangled quantum frequency comb in quantum network using CMOS technology as well as standard dense wavelength division multiplexing technology. Comment: 11 pages, 9 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevApplied.20.064032 |
| URL الوصول: | http://arxiv.org/abs/2309.01181 |
| رقم الأكسشن: | edsarx.2309.01181 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevApplied.20.064032 |
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