| Autor: |
Natarajan, C. M., Peruzzo, A., Miki, S., Sasaki, M., Wang, Z., Baek, B., Nam, S., Hadfield, R. H., O'Brien, J. L. |
| Rok vydání: |
2010 |
| Předmět: |
|
| Zdroj: |
Appl. Phys. Lett. 96, 211101 (2010) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1063/1.3413948 |
| Popis: |
Advanced quantum information science and technology (QIST) applications place exacting de- mands on optical components. Quantum waveguide circuits offer a route to scalable QIST on a chip. Superconducting single-photon detectors (SSPDs) provide infrared single-photon sensitivity combined with low dark counts and picosecond timing resolution. In this study we bring these two technologies together. Using SSPDs we observe a two-photon interference visibility of 92.3\pm1.0% in a silica-on-silicon waveguide directional coupler at \lamda = 804 nm-higher than that measured with silicon detectors (89.9\pm0.3%). We further operated controlled-NOT gate and quantum metrology circuits with SSPDs. These demonstrations present a clear path to telecom-wavelength quantum waveguide circuits. |
| Databáze: |
arXiv |
| Externí odkaz: |
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