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Tailoring photonic entanglement in high-dimensional Hilbert spaces

Published in Physical Review. A. 2004, vol. 69, no. 5
Abstract We present an experiment where two photonic systems of arbitrary dimensions can be entangled. The method is based on spontaneous parametric down conversion with trains of d pump pulses with a fixed phase relation, generated by a mode-locked laser. This leads to a photon pair created in a coherent superposition of d discrete emission times, given by the successive laser pulses. Entanglement is shown by performing a two-photon interference experiment and by observing the visibility of the interference fringes increasing as a function of the dimension d. Factors limiting the visibility, such as the presence of multiple pairs in one train, are discussed.
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DE RIEDMATTEN, Hugues et al. Tailoring photonic entanglement in high-dimensional Hilbert spaces. In: Physical Review. A, 2004, vol. 69, n° 5. https://archive-ouverte.unige.ch/unige:36731

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Deposited on : 2014-05-20

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