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Up-conversion Single-photon Detector Using Multi-wavelength Sampling Techniques



Lijun Ma, Joshua Bienfang, Oliver T. Slattery, Xiao Tang


The maximum achievable data-rate of a quantum communication system can be critically limited by the efficiency and temporal resolution of the system s single-photon detectors. Frequency up-conversion technology can be used to increase detection efficiency for IR photons. In this paper we describe a scheme to improve the temporal resolution of an up-conversion single-photon detector using multi-wavelength optical-sampling techniques, allowing for increased the transmission rates in single-photon communications systems. We experimentally demonstrate our approach with an up-conversion detector using two spectrally and temporally distinct pump pulses, and show that it allows for high-fidelity single-photon detection at twice the rate supported by a conventional single-pump up-conversion detector. We also discuss the scheme capacity and identify important performance-limiting trade offs.
Optics Express


single photon detection, up-conversion detectors, temporal resolution


Ma, L. , Bienfang, J. , Slattery, O. and Tang, X. (2011), Up-conversion Single-photon Detector Using Multi-wavelength Sampling Techniques, Optics Express, [online], (Accessed June 17, 2024)


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Created March 7, 2011, Updated October 12, 2021