Please use this identifier to cite or link to this item:
doi:10.22028/D291-39721
Title: | Telecom quantum photonic interface for a 40Ca+ single-ion quantum memory |
Author(s): | Arenskötter, Elena Bauer, Tobias Kucera, Stephan Bock, Matthias Eschner, Jürgen Becher, Christoph |
Language: | English |
Title: | npj Quantum Information |
Volume: | 9 |
Issue: | 1 |
Publisher/Platform: | Springer Nature |
Year of Publication: | 2023 |
Free key words: | Quantum optics Single photons and quantum effects |
DDC notations: | 500 Science |
Publikation type: | Journal Article |
Abstract: | Entanglement-based quantum networks require quantum photonic interfaces between stationary quantum memories and photons, enabling entanglement distribution. Here we present such a photonic interface, designed for connecting a 40Ca+ singleion quantum memory to the telecom C-band. The interface combines a memory-resonant, cavity-enhanced spontaneous parametric down-conversion photon pair source with bi-directional polarization-conserving quantum frequency conversion. We demonstrate preservation of high-fidelity entanglement during conversion, fiber transmission over up to 40 km and backconversion to the memory wavelength. Even for the longest distance and bi-directional conversion the entanglement fidelity remains larger than 95% (98%) without (with) background correction. |
DOI of the first publication: | 10.1038/s41534-023-00701-z |
URL of the first publication: | https://www.nature.com/articles/s41534-023-00701-z |
Link to this record: | urn:nbn:de:bsz:291--ds-397214 hdl:20.500.11880/35785 http://dx.doi.org/10.22028/D291-39721 |
ISSN: | 2056-6387 |
Date of registration: | 9-May-2023 |
Description of the related object: | Supplementary information |
Related object: | https://static-content.springer.com/esm/art%3A10.1038%2Fs41534-023-00701-z/MediaObjects/41534_2023_701_MOESM1_ESM.pdf |
Faculty: | NT - Naturwissenschaftlich- Technische Fakultät |
Department: | NT - Physik |
Professorship: | NT - Prof. Dr. Christoph Becher NT - Prof. Dr. Jürgen Eschner |
Collections: | SciDok - Der Wissenschaftsserver der Universität des Saarlandes |
Files for this record:
File | Description | Size | Format | |
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s41534-023-00701-z.pdf | 1,22 MB | Adobe PDF | View/Open |
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