Versatile engineering of multimode squeezed states by optimizing the pump spectral profile in spontaneous parametric down-conversion - Sorbonne Université Access content directly
Journal Articles Physical Review A : Atomic, molecular, and optical physics [1990-2015] Year : 2018

Versatile engineering of multimode squeezed states by optimizing the pump spectral profile in spontaneous parametric down-conversion

Claude Fabre
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Nicolas Treps
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Abstract

We study the quantum correlations induced by spontaneous parametric down-conversion (SPDC) of a frequency comb. We derive a theoretical method to find the output state corresponding to a pump with an arbitrary spectral profile. After applying it to the relevant example of a spectrally chirped pump, we run an optimization algorithm to numerically find the pump profiles maximizing some target functions. These include the number of independently squeezed modes and the variances of nullifiers defining cluster states used in many continuous-variable quantum information protocols. To assess the advantages of pump-shaping in real experiments we take into account the physical limitations of the pulse shaper.
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Dates and versions

hal-01826173 , version 1 (29-06-2018)

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Francesco Arzani, Claude Fabre, Nicolas Treps. Versatile engineering of multimode squeezed states by optimizing the pump spectral profile in spontaneous parametric down-conversion. Physical Review A : Atomic, molecular, and optical physics [1990-2015], 2018, 97 (3), pp.033808. ⟨10.1103/PhysRevA.97.033808⟩. ⟨hal-01826173⟩
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