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Broadband entangled photons enable quantum interferometry, a technique for ultra-high resolution measurement of polarization mode dispersion [1,2]. We present designs and preliminary results from a broadband entangled photon source in periodically poled lithium niobate waveguides
We propose a scheme for generating frequency-correlated two-photon states via Spontaneous Parametric Down Conversion in periodically poled nonlinear integrated-optic waveguides. A method to differentiate such states from traditional frequency anti-correlated photon-pair sources is discussed.
Photon pairs sources based on nonlinear optical techniques are essential components in modern quantum optical systems. We present here a naturally occurring biological source of photon pairs—Green Fluorescent Protein (GFP)—obtained by a non-degenerate four-wave mixing (FWM).
We present the measurement of χ(3) nonlinearity of Green Fluorescent Protein. The nonlinear index is n2 = 10−19m2/W, opening the possibility of using genetically engineerable and naturally occuring proteins in cells as a source of four wave mixing experiments.
Entangled photon pair sources are of key importance in the emerging field of quantum information technology. A common method to generate entangled pairs is based on type II phase-matched spontaneous parametric down conversion (SPDC) followed by a spatial separation of the pair using a conventional beam splitter (see e.g. [1], [2]). This scheme can be used to generate entangled pairs at degeneracy...
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