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arXiv · 1310.7422

Upconversion single photon detection near 2 um

Guo-Liang Shentu·Xiu-Xiu Xia·Qi-Chao Sun·Jason S. Pelc·M. M. Fejer·Qiang Zhang·Jian-Wei Pan
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Abstract

We have demonstrated upconversion detection at the single photon level in the 2 um spectral window using a pump wavelength near 1550nm, a periodically poled lithium niobate (PPLN) waveguide, and a volume Bragg grating (VBG) to reduce noise. We achieve a system photon detection efficiency of 10%, with a noise count rate of 24,500 counts per second, competitive with other 2 um single photon detection technologies. This detector has potential applications in environmental gas monitoring, life science, and classical and quantum communication.

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Guo-Liang Shentu, Xiu-Xiu Xia, Qi-Chao Sun, Jason S. Pelc, M. M. Fejer, Qiang Zhang, Jian-Wei Pan. 2013-11-02. Upconversion single photon detection near 2 um. https://arxiv.org/abs/1310.7422

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