Search for transient variations of the fine structure constant and dark matter using fiber-linked optical atomic clocks

Autor: B M Roberts, P Delva, A Al-Masoudi, A Amy-Klein, C Bærentsen, C F A Baynham, E Benkler, S Bilicki, S Bize, W Bowden, J Calvert, V Cambier, E Cantin, E A Curtis, S Dörscher, M Favier, F Frank, P Gill, R M Godun, G Grosche, C Guo, A Hees, I R Hill, R Hobson, N Huntemann, J Kronjäger, S Koke, A Kuhl, R Lange, T Legero, B Lipphardt, C Lisdat, J Lodewyck, O Lopez, H S Margolis, H Álvarez-Martínez, F Meynadier, F Ozimek, E Peik, P-E Pottie, N Quintin, C Sanner, L De Sarlo, M Schioppo, R Schwarz, A Silva, U Sterr, Chr Tamm, R Le Targat, P Tuckey, G Vallet, T Waterholter, D Xu, P Wolf

Publikováno v: New Journal of Physics, Vol 22, Iss 9, p 093010 (2020)

We search for transient variations of the fine structure constant using data from a European network of fiber-linked optical atomic clocks. By searching for coherent variations in the recorded clock frequency comparisons across the network, we signif

Externí odkaz: https://doaj.org/article/e2e070ab3cec4b40854dc0882b271fe7

Comparing ultrastable lasers at 7 × 10−17 fractional frequency instability through a 2220 km optical fibre network

Autor: M. Schioppo, J. Kronjäger, A. Silva, R. Ilieva, J. W. Paterson, C. F. A. Baynham, W. Bowden, I. R. Hill, R. Hobson, A. Vianello, M. Dovale-Álvarez, R. A. Williams, G. Marra, H. S. Margolis, A. Amy-Klein, O. Lopez, E. Cantin, H. Álvarez-Martínez, R. Le Targat, P. E. Pottie, N. Quintin, T. Legero, S. Häfner, U. Sterr, R. Schwarz, S. Dörscher, C. Lisdat, S. Koke, A. Kuhl, T. Waterholter, E. Benkler, G. Grosche

Publikováno v: Nature Communications, Vol 13, Iss 1, Pp 1-11 (2022)

Precision measurement plays an important role in frequency metrology and optical communications. Here the authors compare two geographically separate ultrastable lasers at 7 × 10−17 fractional frequency instability over a 2220 km optical fibre lin

Externí odkaz: https://doaj.org/article/12ee0efe5b874f56afe45fbd668ed888

Optical interferometry–based array of seafloor environmental sensors using a transoceanic submarine cable

Autor: G. Marra, D. M. Fairweather, V. Kamalov, P. Gaynor, M. Cantono, S. Mulholland, B. Baptie, J. C. Castellanos, G. Vagenas, J.-O. Gaudron, J. Kronjäger, I. R. Hill, M. Schioppo, I. Barbeito Edreira, K. A. Burrows, C. Clivati, D. Calonico, A. Curtis

Publikováno v: Marra, G, Fairweather, D, Kamalov, V, Gaynor, P, Cantono, M, Mulholland, S, Baptie, B, Castellanos, J C, Vagenas, G, Gaudron, J-O, Kronjäger, J, Hill, I R, Schioppo, M, Barbeito Edreira, I, Burrows, K A, Clivati, C, Calonico, D & Curtis, A 2022, ' Optical interferometry-based array of seafloor environmental sensors using a trans-oceanic submarine cable ', Science, vol. 376, no. 6595, pp. 874-879 . https://doi.org/10.1126/science.abo1939

Optical fiber–based sensing technology can drastically improve Earth observations by enabling the use of existing submarine communication cables as seafloor sensors. Previous interferometric and polarization-based techniques demonstrated environmen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cf040a0963309a58c93626f660855a55
https://doi.org/10.1126/science.abo1939

Optical Multiplexing of Metrological Time and Frequency Signals in a Single 100-GHz-Grid Optical Channel

Autor: L. Buczek, Harald Schnatz, Lukasz Sliwczynski, Przemyslaw Krehlik, J. Kronjäger

Publikováno v: IEEE transactions on ultrasonics, ferroelectrics, and frequency control. 68(6)

In this article, the concept of co-locating all metrological time and frequency signals in a single optical channel of a standard, 100-GHz-spaced optical grid is presented and evaluated. The solution is intended for situations where only a narrow opt

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aeeb2480dd5bb72385c17a0d679cb921
https://pubmed.ncbi.nlm.nih.gov/33476266

Search for transient variations of the fine structure constant and dark matter using fiber-linked optical atomic clocks

Autor: Roman Schwarz, Olivier Lopez, R. M. Godun, J E Calvert, Dan Xu, L De Sarlo, C. Baerentsen, R. Le Targat, Ian R. Hill, Thomas Legero, Jérôme Lodewyck, Nicolas Quintin, Erik Benkler, Guy Vallet, Benjamin Roberts, S. Dörscher, Helen S. Margolis, P. Delva, Alissa Silva, Uwe Sterr, Christine C. Guo, Ch. Lisdat, C. F. A. Baynham, Ekkehard Peik, A. Al-Masoudi, Nils Huntemann, Peter Wolf, Sébastien Bize, H. Alvarez-Martinez, Christian Sanner, Aurélien Hees, T. Waterholter, William B. Bowden, Philip Tuckey, Sebastian Koke, F. Ozimek, R. Lange, Gesine Grosche, Anne Amy-Klein, V. Cambier, Etienne Cantin, F. Meynadier, Chr. Tamm, Maxime Favier, Paul-Eric Pottie, Florian Frank, S. Bilicki, A. Kuhl, J. Kronjäger, Richard Hobson, Burghard Lipphardt, Marco Schioppo, E. A. Curtis, Patrick Gill

Publikováno v: New Journal of Physics
New Journal of Physics, Institute of Physics: Open Access Journals, 2020, 22 (9), pp.093010. ⟨10.1088/1367-2630/abaace⟩
HAL

We search for transient variations of the fine structure constant using data from a European network of fiber-linked optical atomic clocks. By searching for coherent variations in the recorded clock frequency comparisons across the network, we signif

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f3a01e57b76b15f775464c101c2db556
https://hal.archives-ouvertes.fr/hal-02193937