تقرير
Spin-photon entanglement of a single Er$^{3+}$ ion in the telecom band
| العنوان: | Spin-photon entanglement of a single Er$^{3+}$ ion in the telecom band |
|---|---|
| المؤلفون: | Uysal, Mehmet T., Dusanowski, Łukasz, Xu, Haitong, Horvath, Sebastian P., Ourari, Salim, Cava, Robert J., de Leon, Nathalie P., Thompson, Jeff D. |
| سنة النشر: | 2024 |
| المجموعة: | Quantum Physics |
| مصطلحات موضوعية: | Quantum Physics |
| الوصف: | Long-distance quantum communication using quantum repeaters is an enabling technology for secure communication, distributed quantum computing and quantum-enhanced sensing and metrology. As a building block of quantum repeaters, spin-photon entanglement has been demonstrated with both atomic and solid-state qubits. However, previously demonstrated qubits with long spin coherence do not directly emit photons into the low-loss telecom band that is needed for long-distance communication. Here, we demonstrate spin-photon entanglement using a single Er$^{3+}$ ion in a solid-state crystal, integrated into a silicon nanophotonic circuit. Direct emission into the telecom band enables an entanglement rate of 1.48 Hz over 15.6 km of optical fiber, with a fidelity of 73(3)$\%$. This opens the door to large-scale quantum networks based on scalable nanophotonic devices and many spectrally multiplexed Er$^{3+}$ ions. Comment: Added references |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2406.06515 |
| رقم الأكسشن: | edsarx.2406.06515 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |