dorsal/arxiv
View SchemaGHz QKD at telecom wavelengths using up-conversion detectors
| Authors | R. T. Thew, S. Tanzilli, L. Krainer, S. C. Zeller, A. Rochas, I. Rech, S. Cova, H. Zbinden, N. Gisin |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0512054 |
| URL | https://arxiv.org/abs/quant-ph/0512054 |
| DOI | 10.1088/1367-2630/8/3/032 |
| Journal | New J. Phys., Vol 8, 32 (2006) |
Abstract
We have developed a hybrid single photon detection scheme for telecom wavelengths based on nonlinear sum-frequency generation and silicon single-photon avalanche diodes (SPADs). The SPAD devices employed have been designed to have very narrow temporal response, i.e. low jitter, which we can exploit for increasing the allowable bit rate for quantum key distribution. The wavelength conversion is obtained using periodically poled Lithium niobate waveguides (W/Gs). The inherently high efficiency of these W/Gs allows us to use a continuous wave laser to seed the nonlinear conversion so as to have a continuous detection scheme. We also present a 1.27GHz qubit repetition rate, one-way phase encoding, quantum key distribution experiment operating at telecom wavelengths that takes advantage of this detection scheme. The proof of principle experiment shows a system capable of MHz raw count rates with a QBER less than 2% and estimated secure key rates greater than 100 kbit/s over 25 km.
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"abstract": "We have developed a hybrid single photon detection scheme for telecom\nwavelengths based on nonlinear sum-frequency generation and silicon\nsingle-photon avalanche diodes (SPADs). The SPAD devices employed have been\ndesigned to have very narrow temporal response, i.e. low jitter, which we can\nexploit for increasing the allowable bit rate for quantum key distribution. The\nwavelength conversion is obtained using periodically poled Lithium niobate\nwaveguides (W/Gs). The inherently high efficiency of these W/Gs allows us to\nuse a continuous wave laser to seed the nonlinear conversion so as to have a\ncontinuous detection scheme. We also present a 1.27GHz qubit repetition rate,\none-way phase encoding, quantum key distribution experiment operating at\ntelecom wavelengths that takes advantage of this detection scheme. The proof of\nprinciple experiment shows a system capable of MHz raw count rates with a QBER\nless than 2% and estimated secure key rates greater than 100 kbit/s over 25 km.",
"arxiv_id": "quant-ph/0512054",
"authors": [
"R. T. Thew",
"S. Tanzilli",
"L. Krainer",
"S. C. Zeller",
"A. Rochas",
"I. Rech",
"S. Cova",
"H. Zbinden",
"N. Gisin"
],
"categories": [
"quant-ph"
],
"doi": "10.1088/1367-2630/8/3/032",
"journal_ref": "New J. Phys., Vol 8, 32 (2006)",
"title": "GHz QKD at telecom wavelengths using up-conversion detectors",
"url": "https://arxiv.org/abs/quant-ph/0512054"
},
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