NAOC Open IR
Intercontinental comparison of optical atomic clocks through very long baseline interferometry
Pizzocaro, Marco1; Sekido, Mamoru2; Takefuji, Kazuhiro2,8; Ujihara, Hideki2; Hachisu, Hidekazu3; Nemitz, Nils3; Tsutsumi, Masanori3; Kondo, Tetsuro2,4; Kawai, Eiji2; Ichikawa, Ryuichi3; Namba, Kunitaka3; Okamoto, Yoshihiro3; Takahashi, Rumi3; Komuro, Junichi3; Clivati, Cecilia1; Bregolin, Filippo1,9; Barbieri, Piero1; Mura, Alberto1; Cantoni, Elena1; Cerretto, Giancarlo1; Levi, Filippo1; Maccaferri, Giuseppe5; Roma, Mauro5; Bortolotti, Claudio5; Negusini, Monia5; Ricci, Roberto1,5; Zacchiroli, Giampaolo5,6; Roda, Juri5; Leute, Julia6,7; Petit, Gerard6; Perini, Federico5; Calonico, Davide1; Ido, Tetsuya3
2020-10-05
Source PublicationNATURE PHYSICS
ISSN1745-2473
Pages12
AbstractThe comparison of distant atomic clocks is foundational to international timekeeping, global positioning and tests of fundamental physics. Optical-fibre links allow the most precise optical clocks to be compared, without degradation, over intracontinental distances up to thousands of kilometres, but intercontinental comparisons remain limited by the performance of satellite transfer techniques. Here we show that very long baseline interferometry (VLBI), although originally developed for radio astronomy and geodesy, can overcome this limit and compare remote clocks through the observation of extragalactic radio sources. We developed dedicated transportable VLBI stations that use broadband detection and demonstrate the comparison of two optical clocks located in Italy and Japan separated by 9,000 km. This system demonstrates performance beyond satellite techniques and can pave the way for future long-term stable international clock comparisons. Very long baseline interferometry is used to compare two optical clocks located in Japan and Italy through the observation of extragalactic radio sources. This approach overcomes limitations of the performance of satellite transfer techniques.
Funding OrganizationEuropean Metrology Program for Innovation and Research (EMPIR) ; European Metrology Program for Innovation and Research (EMPIR) ; Italian Ministry of Education, University and Research ; Italian Ministry of Education, University and Research ; Horizon 2020 Marie Skodowska-Curie Research and Innovation Staff Exchange (MSCA-RISE) project Q-SENSE ; Horizon 2020 Marie Skodowska-Curie Research and Innovation Staff Exchange (MSCA-RISE) project Q-SENSE ; European Union's Horizon 2020 research and innovation programme ; European Union's Horizon 2020 research and innovation programme ; EMPIR Participating States ; EMPIR Participating States ; French National Research Agency under the LABEX Cluster of Excellence FIRST-TF ; French National Research Agency under the LABEX Cluster of Excellence FIRST-TF ; high-speed research network JGN ; high-speed research network JGN ; high-speed research network Internet2 ; high-speed research network Internet2 ; high-speed research network TransPAC ; high-speed research network TransPAC ; high-speed research network APAN ; high-speed research network APAN ; high-speed research network GEANT ; high-speed research network GEANT ; high-speed research network GARR ; high-speed research network GARR ; Research Coordination Committee ; Research Coordination Committee ; National Astronomical Observatory of Japan (NAOJ) ; National Astronomical Observatory of Japan (NAOJ) ; National Institutes of Natural Sciences (NINS) ; National Institutes of Natural Sciences (NINS) ; European Metrology Program for Innovation and Research (EMPIR) ; European Metrology Program for Innovation and Research (EMPIR) ; Italian Ministry of Education, University and Research ; Italian Ministry of Education, University and Research ; Horizon 2020 Marie Skodowska-Curie Research and Innovation Staff Exchange (MSCA-RISE) project Q-SENSE ; Horizon 2020 Marie Skodowska-Curie Research and Innovation Staff Exchange (MSCA-RISE) project Q-SENSE ; European Union's Horizon 2020 research and innovation programme ; European Union's Horizon 2020 research and innovation programme ; EMPIR Participating States ; EMPIR Participating States ; French National Research Agency under the LABEX Cluster of Excellence FIRST-TF ; French National Research Agency under the LABEX Cluster of Excellence FIRST-TF ; high-speed research network JGN ; high-speed research network JGN ; high-speed research network Internet2 ; high-speed research network Internet2 ; high-speed research network TransPAC ; high-speed research network TransPAC ; high-speed research network APAN ; high-speed research network APAN ; high-speed research network GEANT ; high-speed research network GEANT ; high-speed research network GARR ; high-speed research network GARR ; Research Coordination Committee ; Research Coordination Committee ; National Astronomical Observatory of Japan (NAOJ) ; National Astronomical Observatory of Japan (NAOJ) ; National Institutes of Natural Sciences (NINS) ; National Institutes of Natural Sciences (NINS) ; European Metrology Program for Innovation and Research (EMPIR) ; European Metrology Program for Innovation and Research (EMPIR) ; Italian Ministry of Education, University and Research ; Italian Ministry of Education, University and Research ; Horizon 2020 Marie Skodowska-Curie Research and Innovation Staff Exchange (MSCA-RISE) project Q-SENSE ; Horizon 2020 Marie Skodowska-Curie Research and Innovation Staff Exchange (MSCA-RISE) project Q-SENSE ; European Union's Horizon 2020 research and innovation programme ; European Union's Horizon 2020 research and innovation programme ; EMPIR Participating States ; EMPIR Participating States ; French National Research Agency under the LABEX Cluster of Excellence FIRST-TF ; French National Research Agency under the LABEX Cluster of Excellence FIRST-TF ; high-speed research network JGN ; high-speed research network JGN ; high-speed research network Internet2 ; high-speed research network Internet2 ; high-speed research network TransPAC ; high-speed research network TransPAC ; high-speed research network APAN ; high-speed research network APAN ; high-speed research network GEANT ; high-speed research network GEANT ; high-speed research network GARR ; high-speed research network GARR ; Research Coordination Committee ; Research Coordination Committee ; National Astronomical Observatory of Japan (NAOJ) ; National Astronomical Observatory of Japan (NAOJ) ; National Institutes of Natural Sciences (NINS) ; National Institutes of Natural Sciences (NINS) ; European Metrology Program for Innovation and Research (EMPIR) ; European Metrology Program for Innovation and Research (EMPIR) ; Italian Ministry of Education, University and Research ; Italian Ministry of Education, University and Research ; Horizon 2020 Marie Skodowska-Curie Research and Innovation Staff Exchange (MSCA-RISE) project Q-SENSE ; Horizon 2020 Marie Skodowska-Curie Research and Innovation Staff Exchange (MSCA-RISE) project Q-SENSE ; European Union's Horizon 2020 research and innovation programme ; European Union's Horizon 2020 research and innovation programme ; EMPIR Participating States ; EMPIR Participating States ; French National Research Agency under the LABEX Cluster of Excellence FIRST-TF ; French National Research Agency under the LABEX Cluster of Excellence FIRST-TF ; high-speed research network JGN ; high-speed research network JGN ; high-speed research network Internet2 ; high-speed research network Internet2 ; high-speed research network TransPAC ; high-speed research network TransPAC ; high-speed research network APAN ; high-speed research network APAN ; high-speed research network GEANT ; high-speed research network GEANT ; high-speed research network GARR ; high-speed research network GARR ; Research Coordination Committee ; Research Coordination Committee ; National Astronomical Observatory of Japan (NAOJ) ; National Astronomical Observatory of Japan (NAOJ) ; National Institutes of Natural Sciences (NINS) ; National Institutes of Natural Sciences (NINS)
DOI10.1038/s41567-020-01038-6
WOS KeywordFREQUENCY TRANSFER ; LATTICE CLOCKS ; TIME ; GPS ; UNCERTAINTY ; REALIZATION ; GEODESY ; SYSTEM ; LEVEL ; RATIO
Language英语
Funding ProjectEuropean Metrology Program for Innovation and Research (EMPIR)[15SIB03 OC18] ; European Metrology Program for Innovation and Research (EMPIR)[15SIB05 OFTEN] ; European Metrology Program for Innovation and Research (EMPIR)[17IND14 WRITE] ; European Metrology Program for Innovation and Research (EMPIR)[18SIB05 ROCIT] ; Italian Ministry of Education, University and Research ; Horizon 2020 Marie Skodowska-Curie Research and Innovation Staff Exchange (MSCA-RISE) project Q-SENSE[691156] ; European Union's Horizon 2020 research and innovation programme ; EMPIR Participating States ; French National Research Agency under the LABEX Cluster of Excellence FIRST-TF[ANR-10-LABX-48-01] ; high-speed research network JGN ; high-speed research network Internet2 ; high-speed research network TransPAC ; high-speed research network APAN ; high-speed research network GEANT ; high-speed research network GARR ; Research Coordination Committee ; National Astronomical Observatory of Japan (NAOJ) ; National Institutes of Natural Sciences (NINS)
Funding OrganizationEuropean Metrology Program for Innovation and Research (EMPIR) ; European Metrology Program for Innovation and Research (EMPIR) ; Italian Ministry of Education, University and Research ; Italian Ministry of Education, University and Research ; Horizon 2020 Marie Skodowska-Curie Research and Innovation Staff Exchange (MSCA-RISE) project Q-SENSE ; Horizon 2020 Marie Skodowska-Curie Research and Innovation Staff Exchange (MSCA-RISE) project Q-SENSE ; European Union's Horizon 2020 research and innovation programme ; European Union's Horizon 2020 research and innovation programme ; EMPIR Participating States ; EMPIR Participating States ; French National Research Agency under the LABEX Cluster of Excellence FIRST-TF ; French National Research Agency under the LABEX Cluster of Excellence FIRST-TF ; high-speed research network JGN ; high-speed research network JGN ; high-speed research network Internet2 ; high-speed research network Internet2 ; high-speed research network TransPAC ; high-speed research network TransPAC ; high-speed research network APAN ; high-speed research network APAN ; high-speed research network GEANT ; high-speed research network GEANT ; high-speed research network GARR ; high-speed research network GARR ; Research Coordination Committee ; Research Coordination Committee ; National Astronomical Observatory of Japan (NAOJ) ; National Astronomical Observatory of Japan (NAOJ) ; National Institutes of Natural Sciences (NINS) ; National Institutes of Natural Sciences (NINS) ; European Metrology Program for Innovation and Research (EMPIR) ; European Metrology Program for Innovation and Research (EMPIR) ; Italian Ministry of Education, University and Research ; Italian Ministry of Education, University and Research ; Horizon 2020 Marie Skodowska-Curie Research and Innovation Staff Exchange (MSCA-RISE) project Q-SENSE ; Horizon 2020 Marie Skodowska-Curie Research and Innovation Staff Exchange (MSCA-RISE) project Q-SENSE ; European Union's Horizon 2020 research and innovation programme ; European Union's Horizon 2020 research and innovation programme ; EMPIR Participating States ; EMPIR Participating States ; French National Research Agency under the LABEX Cluster of Excellence FIRST-TF ; French National Research Agency under the LABEX Cluster of Excellence FIRST-TF ; high-speed research network JGN ; high-speed research network JGN ; high-speed research network Internet2 ; high-speed research network Internet2 ; high-speed research network TransPAC ; high-speed research network TransPAC ; high-speed research network APAN ; high-speed research network APAN ; high-speed research network GEANT ; high-speed research network GEANT ; high-speed research network GARR ; high-speed research network GARR ; Research Coordination Committee ; Research Coordination Committee ; National Astronomical Observatory of Japan (NAOJ) ; National Astronomical Observatory of Japan (NAOJ) ; National Institutes of Natural Sciences (NINS) ; National Institutes of Natural Sciences (NINS) ; European Metrology Program for Innovation and Research (EMPIR) ; European Metrology Program for Innovation and Research (EMPIR) ; Italian Ministry of Education, University and Research ; Italian Ministry of Education, University and Research ; Horizon 2020 Marie Skodowska-Curie Research and Innovation Staff Exchange (MSCA-RISE) project Q-SENSE ; Horizon 2020 Marie Skodowska-Curie Research and Innovation Staff Exchange (MSCA-RISE) project Q-SENSE ; European Union's Horizon 2020 research and innovation programme ; European Union's Horizon 2020 research and innovation programme ; EMPIR Participating States ; EMPIR Participating States ; French National Research Agency under the LABEX Cluster of Excellence FIRST-TF ; French National Research Agency under the LABEX Cluster of Excellence FIRST-TF ; high-speed research network JGN ; high-speed research network JGN ; high-speed research network Internet2 ; high-speed research network Internet2 ; high-speed research network TransPAC ; high-speed research network TransPAC ; high-speed research network APAN ; high-speed research network APAN ; high-speed research network GEANT ; high-speed research network GEANT ; high-speed research network GARR ; high-speed research network GARR ; Research Coordination Committee ; Research Coordination Committee ; National Astronomical Observatory of Japan (NAOJ) ; National Astronomical Observatory of Japan (NAOJ) ; National Institutes of Natural Sciences (NINS) ; National Institutes of Natural Sciences (NINS) ; European Metrology Program for Innovation and Research (EMPIR) ; European Metrology Program for Innovation and Research (EMPIR) ; Italian Ministry of Education, University and Research ; Italian Ministry of Education, University and Research ; Horizon 2020 Marie Skodowska-Curie Research and Innovation Staff Exchange (MSCA-RISE) project Q-SENSE ; Horizon 2020 Marie Skodowska-Curie Research and Innovation Staff Exchange (MSCA-RISE) project Q-SENSE ; European Union's Horizon 2020 research and innovation programme ; European Union's Horizon 2020 research and innovation programme ; EMPIR Participating States ; EMPIR Participating States ; French National Research Agency under the LABEX Cluster of Excellence FIRST-TF ; French National Research Agency under the LABEX Cluster of Excellence FIRST-TF ; high-speed research network JGN ; high-speed research network JGN ; high-speed research network Internet2 ; high-speed research network Internet2 ; high-speed research network TransPAC ; high-speed research network TransPAC ; high-speed research network APAN ; high-speed research network APAN ; high-speed research network GEANT ; high-speed research network GEANT ; high-speed research network GARR ; high-speed research network GARR ; Research Coordination Committee ; Research Coordination Committee ; National Astronomical Observatory of Japan (NAOJ) ; National Astronomical Observatory of Japan (NAOJ) ; National Institutes of Natural Sciences (NINS) ; National Institutes of Natural Sciences (NINS)
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
WOS IDWOS:000575344700002
PublisherNATURE RESEARCH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/81750
Collection中国科学院国家天文台
Corresponding AuthorPizzocaro, Marco; Sekido, Mamoru
Affiliation1.Ist Nazl Ric Metrol INRIM, Turin, Italy
2.Natl Inst Informat & Commun Technol NICT, Kashima, Japan
3.Natl Inst Informat & Commun Technol NICT, Koganei, Tokyo, Japan
4.Chinese Acad Sci, Shanghai Astron Observ, Shanghai, Shanghai, Peoples R China
5.Ist Radioastron IRA, Ist Nazl Astrofis INAF, Bologna, Italy
6.Bur Int Poids & Mesures BIPM, Sevres, France
7.Sorbonne Univ, Univ PSL, CNRS, LNE SYRTE,Observ Paris, Paris, France
8.Japan Aerosp Explorat Agcy JAXA, Nagano, Japan
9.Topt Photon AG, Grafelfing, Germany
Recommended Citation
GB/T 7714
Pizzocaro, Marco,Sekido, Mamoru,Takefuji, Kazuhiro,et al. Intercontinental comparison of optical atomic clocks through very long baseline interferometry[J]. NATURE PHYSICS,2020:12.
APA Pizzocaro, Marco.,Sekido, Mamoru.,Takefuji, Kazuhiro.,Ujihara, Hideki.,Hachisu, Hidekazu.,...&Ido, Tetsuya.(2020).Intercontinental comparison of optical atomic clocks through very long baseline interferometry.NATURE PHYSICS,12.
MLA Pizzocaro, Marco,et al."Intercontinental comparison of optical atomic clocks through very long baseline interferometry".NATURE PHYSICS (2020):12.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Pizzocaro, Marco]'s Articles
[Sekido, Mamoru]'s Articles
[Takefuji, Kazuhiro]'s Articles
Baidu academic
Similar articles in Baidu academic
[Pizzocaro, Marco]'s Articles
[Sekido, Mamoru]'s Articles
[Takefuji, Kazuhiro]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Pizzocaro, Marco]'s Articles
[Sekido, Mamoru]'s Articles
[Takefuji, Kazuhiro]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.