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http://hdl.handle.net/20.500.12386/34354
Title: | VLBI experiments with the dissemination of a common clock via coherent optical fiber link | Authors: | RICCI, ROBERTO NEGUSINI, MONIA PERINI, FEDERICO BORTOLOTTI, Claudio ROMA, MAURO MACCAFERRI, Giuseppe STAGNI, Matteo Clivati, Cecilia Mura, Alberto Levi, Filippo Calonico, Davide Bianco, Giuseppe de Cumis, Mario Siciliani Amato, Luigi Santamaria Iacolina, Noemi Maria VALENTE, Giuseppe MIGONI, CARLO MELIS, Andrea |
Issue Date: | 2021 | Journal: | POS PROCEEDINGS OF SCIENCE | Number: | 399 | Abstract: | Atomic clock synchronization plays an important role in both astronomical and geodetic Very Long Baseline Interferometry, as time and frequency standards are provided by station clocks. National metrological institutes have recently started streaming (via optical fiber links) frequency references from ultra-stable clocks based on optical line transitions in Strontium/Ytterbium laser-cooled lattices. Optical lattice clocks are already two orders of magnitude more stable than the radio station H-masers. In this talk we will describe how the Italian Qauntum Backbone (IQB) was used to carry out a series of European geodetic VLBI experiments in which the Medicina and Matera radio stations were connected to the same remote clock located at the Italian Metrological institute in Turin, via the IQB optical link. In the foreseeable future a European VLBI network of radio stations could be connected via optical fiber links to a single very high-performance clock hosted by a European Metrological institute. | Conference Name: | European VLBI Network Mini-Symposium and Users' Meeting 2021 | Conference Place: | online | Conference Date: | 12-14 July, 2021 | URI: | http://hdl.handle.net/20.500.12386/34354 | URL: | https://pos.sissa.it/cgi-bin/reader/conf.cgi?confid=399 https://pos.sissa.it/399/029/pdf |
ISSN: | 1824-8039 | Fulltext: | open |
Appears in Collections: | 3.01 Contributi in Atti di convegno |
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Ricci_et_al_EVN2021_029.pdf | PDF editoriale | 276.16 kB | Adobe PDF | View/Open |
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