12 February 2007 Photon number-resolved detectors: prospects and applications
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The Photon Number-Resolved (PNR) detectors are capable to distinguish between finite numbers n of photons (n = 1, 2, 3, ...) within an ultrafast (femtosecond or picosecond range) week radiation pulse. Recently, a great interest to such devices has been expressed by the quantum information sciences. In the nearest future, an interest to development of such devices can be significantly enhanced by emerging class of new nanophotonic and biological applications, such as single-molecule studies with fluorescent nanoparticles. As it was found recently, the multiexciton state achieved through fast pulse laser irradiation of individual nanoparticle lead to multiphoton character of light emission. The exact knowledge of the number of photons emitted by individual nanoparticle in colloids can provide us with deeper understanding of the interaction between single fluorescent nanoparticle and its environment. However, the development of PNR devices would be necessary to establish such novel photon number-resolved imaging technologies. In this article we briefly review some basic approaches to design and development of the future PNR detectors and electronic readouts.
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Aleksandr Verevkin, Aleksandr Verevkin, } "Photon number-resolved detectors: prospects and applications", Proc. SPIE 6447, Nanoscale Imaging, Spectroscopy, Sensing, and Actuation for Biomedical Applications IV, 644706 (12 February 2007); doi: 10.1117/12.695002; https://doi.org/10.1117/12.695002

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