Please use this identifier to cite or link to this item: https://doi.org/10.1063/5.0052239
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dc.titleTemperature insensitive type II quasi-phasematched spontaneous parametric downconversion
dc.contributor.authorPan, Xin-Yi
dc.contributor.authorKurtsiefer, Christian
dc.contributor.authorLing, Alexander
dc.contributor.authorGrieve, James A.
dc.date.accessioned2022-10-11T08:08:32Z
dc.date.available2022-10-11T08:08:32Z
dc.date.issued2021-07-12
dc.identifier.citationPan, Xin-Yi, Kurtsiefer, Christian, Ling, Alexander, Grieve, James A. (2021-07-12). Temperature insensitive type II quasi-phasematched spontaneous parametric downconversion. Applied Physics Letters 19 (2) : 21107. ScholarBank@NUS Repository. https://doi.org/10.1063/5.0052239
dc.identifier.issn0003-6951
dc.identifier.urihttps://scholarbank.nus.edu.sg/handle/10635/232220
dc.description.abstractThe temperature dependence of the refractive indices of potassium titanyl phosphate (KTP) is shown to enable quasi-phasematched type II spontaneous parametric downconversion (SPDC) with low temperature sensitivity. Calculations show the effect to be maximized for emission of photons at around 1165 nm, as well as producing similar plateaus for wavelengths throughout the telecommunications bands. We experimentally demonstrate the effect, observing temperature-insensitive degenerate emission between 20 °C and 100 °C at 1327 nm, within the telecommunications O band. This result has practical implications for the development of entangled photon sources for resource-constrained environments, and we demonstrate a simple polarization entangled source as a proof of concept. © 2021 Author(s).
dc.publisherAmerican Institute of Physics Inc.
dc.rightsAttribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.sourceScopus OA2021
dc.typeArticle
dc.contributor.departmentDEPT OF PHYSICS
dc.contributor.departmentCENTRE FOR QUANTUM TECHNOLOGIES
dc.description.doi10.1063/5.0052239
dc.description.sourcetitleApplied Physics Letters
dc.description.volume19
dc.description.issue2
dc.description.page21107
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