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6CCVD Research

Low random duty-cycle errors in periodically-poled KTP revealed by sum-frequency generation

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2021-06-21
AuthorsFelix Mann, Helen M. Chrzanowski, Sven Ramelow
InstitutionsHumboldt-UniversitƤt zu Berlin
Citations2

Abstract

Section titled ā€œAbstractā€

Single photons from nitrogen-vacancy centers in diamond are a promising building block in the realisation of quantum networks [1] [2] . However quantum frequency conversion (QFC) [3] of these red single photons remains an indispensable requirement, allowing the scale of potential networks to achieve distances accessible with telecom fibers [4] . QFC can be realised in a periodically-poled nonlinear crystal with a Ļ‡ (2) -nonlinearity using sum-frequency or difference-frequency generation (SFG/DFG). A major problem for scenarios where the pump wavelength is shorter than the target wavelength is the parasitic spontaneous parametric down-conversion of pump photons, whose efficiency is increased by fabrication errors of the periodic poling: It was shown by [5] that these fabrication errors, namely random duty cycle errors [6] , introduce a pedestal in the phase-matching curve at detunings far from the design wavelengths.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
  1. 2008 - The quantum internet [Crossref]

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