A domain-engineered KTP crystal generates telecom-wavelength polarization-entangled photon pairs in one pass, with round spectral lobes that support high-purity heralded photons.
Entangled photon-pair sources based on three-wave mixing in bulk crystals,
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Direct Polarization-Entangled Photon Pair Generation Using Domain-Engineered Nonlinear Crystals
A domain-engineered KTP crystal generates telecom-wavelength polarization-entangled photon pairs in one pass, with round spectral lobes that support high-purity heralded photons.