Conditional preparation of single photons using parametric downconversion: a recipe for purity
In an experiment reported recently (Mosley et al 2008 Phys. Rev. Lett. 100 133601), we demonstrated that, through group velocity matched parametric downconversion, heralded single photons can be generated in pure quantum states without spectral filtering. The technique relies on factorable photon pa...
| Päätekijät: | , , , |
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| Aineistotyyppi: | Journal article |
| Kieli: | English |
| Julkaistu: |
2008
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| _version_ | 1826279139155378176 |
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| author | Mosley, P Lundeen, J Smith, B Walmsley, I |
| author_facet | Mosley, P Lundeen, J Smith, B Walmsley, I |
| author_sort | Mosley, P |
| collection | OXFORD |
| description | In an experiment reported recently (Mosley et al 2008 Phys. Rev. Lett. 100 133601), we demonstrated that, through group velocity matched parametric downconversion, heralded single photons can be generated in pure quantum states without spectral filtering. The technique relies on factorable photon pair production, initially developed theoretically in the strict collinear regime; focusing-required in any experimental implementation-can ruin this factorability. Here, we present the numerical model used to design our single photon sources and minimize spectral correlations in the light of such experimental considerations. Furthermore, we show that the results of our model are in good agreement with measurements made on the photon pairs and give a detailed description of the exact requirements for constructing this type of source. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. |
| first_indexed | 2024-03-06T23:54:19Z |
| format | Journal article |
| id | oxford-uuid:73ac4c9b-2bea-465d-849a-c2f5ee3c9bef |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T23:54:19Z |
| publishDate | 2008 |
| record_format | dspace |
| spelling | oxford-uuid:73ac4c9b-2bea-465d-849a-c2f5ee3c9bef2022-03-26T19:57:59ZConditional preparation of single photons using parametric downconversion: a recipe for purityJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:73ac4c9b-2bea-465d-849a-c2f5ee3c9befEnglishSymplectic Elements at Oxford2008Mosley, PLundeen, JSmith, BWalmsley, IIn an experiment reported recently (Mosley et al 2008 Phys. Rev. Lett. 100 133601), we demonstrated that, through group velocity matched parametric downconversion, heralded single photons can be generated in pure quantum states without spectral filtering. The technique relies on factorable photon pair production, initially developed theoretically in the strict collinear regime; focusing-required in any experimental implementation-can ruin this factorability. Here, we present the numerical model used to design our single photon sources and minimize spectral correlations in the light of such experimental considerations. Furthermore, we show that the results of our model are in good agreement with measurements made on the photon pairs and give a detailed description of the exact requirements for constructing this type of source. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. |
| spellingShingle | Mosley, P Lundeen, J Smith, B Walmsley, I Conditional preparation of single photons using parametric downconversion: a recipe for purity |
| title | Conditional preparation of single photons using parametric downconversion: a recipe for purity |
| title_full | Conditional preparation of single photons using parametric downconversion: a recipe for purity |
| title_fullStr | Conditional preparation of single photons using parametric downconversion: a recipe for purity |
| title_full_unstemmed | Conditional preparation of single photons using parametric downconversion: a recipe for purity |
| title_short | Conditional preparation of single photons using parametric downconversion: a recipe for purity |
| title_sort | conditional preparation of single photons using parametric downconversion a recipe for purity |
| work_keys_str_mv | AT mosleyp conditionalpreparationofsinglephotonsusingparametricdownconversionarecipeforpurity AT lundeenj conditionalpreparationofsinglephotonsusingparametricdownconversionarecipeforpurity AT smithb conditionalpreparationofsinglephotonsusingparametricdownconversionarecipeforpurity AT walmsleyi conditionalpreparationofsinglephotonsusingparametricdownconversionarecipeforpurity |