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Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR)

Sum-frequency-photon generation from an entangled photon pair

Yu Eto, Masayuki Okano, Akira Tanaka, Shanthi Subashchandran, Ryo Okamoto, Hwan Hong Lim, Sunao Kurimura, Shigeki Takeuchi

Published Jun 1, 2013• 0 citations
Publisher

Abstract

We report sum-frequency-photon generation from an entangled photon pair, which is an important step toward the realization of photon pairs with ultra-short (monocycle) temporal correlation.
DOI
10.1109/cleopr.2013.6600603

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In the past couple of decades, the use of quantum states of light has been gaining interest in different disciplines from telecommunications to imaging and sensing due to its non-classical features that allow to exceed classical limitations. A quantum enhancement in fluorescence microscopy has been explored in a recent study, whereby, time-frequency-entangled photon pairs generated through spontaneous parametric down conversion (SPDC) process were used to demonstrate linear absorption rates in standard fluorophores by the virtue of entangled two-photon absorption (ETPA) [1]. Meanwhile, a prior study on sum-frequency generation (SFG) with down-converted photon pairs has demonstrated that the rate of photon pair recombination is linearly proportional to the down-converted bandwidth [2]. In other words, as the bandwidth of the down-converted photon pairs increases, it reduces the temporal separation between the photons, which in turn, increases the probability for up-conversion via SFG.