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Creation of Pure-State Photon Pairs and Single Photon Wavelength Translation in Photonic Crystal Fibers

Hayden McGuinness, University of Oregon

(Session 5 : Friday from 5:00-7:00)

Abstract. H. J. McGuinness and M. G. Raymer Oregon Center for Optics University of Oregon Tailor-made photonic crystal fibers (PCFs) allow for unprecedented control over important properties such as fiber dispersion, while also producing tight light confinement and nearly endlessly single mode behavior. It is possible to engineer a PCF which, with judicious choice of pumping scheme, spontaneously produces two-photon states with spectral correlations (“entanglement”) ranging from almost complete correlation to almost no correlation, without the need for spectral post filtering. Of special interest are pure, uncorrelated states, which could be a resource in quantum information processing. Under a different pumping scheme it is possible to translate photon states from one wavelength to another with theoretically one hundred percent efficiency and with no additional noise. The translation can occur over a few up to several hundred nanometers, for example, from telecom to visible wavelengths, and visa versa. We study these types of photon state creation and translation theoretically and experimentally.