Published April 1, 2021
| public
Journal Article
Compact energy–time entanglement source using cascaded nonlinear interactions
Abstract
Entangled photon pair sources are essential for applications such as quantum communication and metrology. Here we present a compact energy–time entangled photon pair source at telecom wavelengths realized through cascaded second harmonic generation and spontaneous parametric down conversion in a single periodically poled lithium niobate waveguide. We introduce and characterize methods to diminish the effects of Raman scattering, the principal being quasi-CW pumping. The quality of energy–time entanglement produced by the compact source is analyzed using two-photon interference and Franson interference, and visibilities as high as 93.9%±0.4% and 90.5%±0.6% are achieved, respectively.
Additional Information
© 2021 Optical Society of America. Received 31 July 2020; revised 23 February 2021; accepted 7 March 2021; posted 9 March 2021 (Doc. ID 404312); published 31 March 2021. The authors acknowledge V. Kiselyov for technical support. The detectors were provided by V.B. Verma and S.W. Nam. Funding: Alberta Innovates - Technology Futures; Natural Sciences and Engineering Research Council of Canada; Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO); Canadian Institute for Advanced Research (CIFAR); National Key Research and Development Program of China (2018YFA0307400); National Natural Science Foundation of China (61405030, 61775025). The authors declare no conflicts of interest. Data Availability: Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.Additional details
- Eprint ID
- 108896
- Resolver ID
- CaltechAUTHORS:20210430-090245990
- Alberta Innovates Technology Futures
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)
- Canadian Institute for Advanced Research (CIFAR)
- 2018YFA0307400
- National Key Research and Development Program of China
- 61405030
- National Natural Science Foundation of China
- 61775025
- National Natural Science Foundation of China
- Created
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2021-04-30Created from EPrint's datestamp field
- Updated
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2021-04-30Created from EPrint's last_modified field