Journal
OPTICS EXPRESS
Volume 17, Issue 13, Pages 10688-10696Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.17.010688
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The study of how to generate high-dimensional quantum states (qudits) is justified by the advantages that they can bring for the field of quantum information. However, to have some real practical potential for quantum communication, these states must be also of simple manipulation. Spatial qudits states, which are generated by engineering the transverse momentum of the parametric down-converted photons, have been until now considered of hard manipulation. Nevertheless, we show in this work a simple technique for modifying these states. This technique is based on the use of programmable diffractive optical devices, that can act as spatial light modulators, to define the Hilbert space of these photons instead of pre-fabricated multi-slits. (C) 2009 Optical Society of America
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