Zobrazeno 1 - 10
of 250
pro vyhledávání: '"Grosche, G."'
Autor:
Grotti, J., Nosske, I., Koller, S. B., Herbers, S., Denker, H., Timmen, L., Vishnyakova, G., Grosche, G., Waterholter, T., Kuhl, A., Koke, S., Benkler, E., Giunta, M., Maisenbacher, L., Matveev, A., Dörscher, S., Schwarz, R., Al-Masoudi, A., Hänsch, T. W., Udem, T. H., Holzwarth, R., Lisdat, C.
We have measured the geopotential difference between two locations separated by 457 km by comparison of two optical lattice clocks via an interferometric fiber link, utilizing the gravitational redshift of the clock transition frequency. The $^{87}$S
Externí odkaz:
http://arxiv.org/abs/2309.14953
Autor:
Roberts, B. M., Delva, P., Al-Masoudi, A., Amy-Klein, A., Bærentsen, C., Baynham, C. F. A., Benkler, E., Bilicki, S., Bize, S., Bowden, W., Calvert, J., Cambier, V., Cantin, E., Curtis, E. A., Dörscher, S., Favier, M., Frank, F., Gill, P., Godun, R. M., Grosche, G., Guo, C., Hees, A., Hill, I. R., Hobson, R., Huntemann, N., Kronjäger, J., Koke, S., Kuhl, A., Lange, R., Legero, T., Lipphardt, B., Lisdat, C., Lodewyck, J., Lopez, O., Margolis, H. S., Álvarez-Martínez, H., Meynadier, F., Ozimek, F., Peik, E., Pottie, P. -E., Quintin, N., Sanner, C., De Sarlo, L., Schioppo, M., Schwarz, R., Silva, A., Sterr, U., Tamm, Chr., Targat, R. Le, Tuckey, P., Vallet, G., Waterholter, T., Xu, D., Wolf, P.
Publikováno v:
New J. Phys. 22, 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:
http://arxiv.org/abs/1907.02661
Akademický článek
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Autor:
Delva, P., Lodewyck, J., Bilicki, S., Bookjans, E., Vallet, G., Targat, R. Le, Pottie, P. -E., Guerlin, C., Meynadier, F., Poncin-Lafitte, C. Le, Lopez, O., Amy-Klein, A., Lee, W. -K., Quintin, N., Lisdat, C., Al-Masoudi, A., Dörscher, S., Grebing, C., Grosche, G., Kuhl, A., Raupach, S., Sterr, U., Hill, I. R., Hobson, R., Bowden, W., Kronjäger, J., Marra, G., Rolland, A., Baynes, F. N., Margolis, H. S., Gill, P.
Publikováno v:
Phys. Rev. Lett. 118, 221102 (2017)
Phase compensated optical fiber links enable high accuracy atomic clocks separated by thousands of kilometers to be compared with unprecedented statistical resolution. By searching for a daily variation of the frequency difference between four stront
Externí odkaz:
http://arxiv.org/abs/1703.04426
Autor:
Guéna, J., Weyers, S., Abgrall, M., Grebing, C., Gerginov, V., Rosenbusch, P., Bize, S., Lipphardt, B., Denker, H., Quintin, N., Raupach, S. M. F., Nicolodi, D., Stefani, F., Chiodo, N., Koke, S., Kuhl, A., Wiotte, F., Meynadier, F., Camisard, E., Chardonnet, C., Coq, Y. Le, Lours, M., Santarelli, G., Amy-Klein, A., Targat, R. Le, Lopez, O., Pottie, P. E., Grosche, G.
Publikováno v:
Metrologia 54 (2017) 348
We report on the first comparison of distant caesium fountain primary frequency standards (PFSs) via an optical fiber link. The 1415 km long optical link connects two PFSs at LNE-SYRTE (Laboratoire National de m\'{e}trologie et d'Essais - SYst\`{e}me
Externí odkaz:
http://arxiv.org/abs/1703.02892
Autor:
Lisdat, C., Grosche, G., Quintin, N., Shi, C., Raupach, S. M. F., Grebing, C., Nicolodi, D., Stefani, F., Al-Masoudi, A., Dörscher, S., Häfner, S., Robyr, J. -L., Chiodo, N., Bilicki, S., Bookjans, E., Koczwara, A., Koke, S., Kuhl, A., Wiotte, F., Meynadier, F., Camisard, E., Abgrall, M., Lours, M., Legero, T., Schnatz, H., Sterr, U., Denker, H., Chardonnet, C., Coq, Y. Le, Santarelli, G., Amy-Klein, A., Targat, R. Le, Lodewyck, J., Lopez, O., Pottie, P. -E.
Leveraging the unrivaled performance of optical clocks in applications in fundamental physics beyond the standard model, in geo-sciences, and in astronomy requires comparing the frequency of distant optical clocks truthfully. Meeting this requirement
Externí odkaz:
http://arxiv.org/abs/1511.07735
In long-haul optical continuous-wave frequency transfer via fiber, remote bidirectional Er$^+$-doped fiber amplifiers are commonly used to mitigate signal attenuation. We demonstrate for the first time the ultrastable transfer of an optical frequency
Externí odkaz:
http://arxiv.org/abs/1407.4907
Autor:
Raupach, S. M. F., Grosche, G.
We demonstrate combined high-fidelity long-haul transfer of a linearly chirped, optical frequency and time transfer. In a proof-of-principle experiment we transfer an optical frequency with a linear chirp of around 238 kHz/s via a phase-stabilized un
Externí odkaz:
http://arxiv.org/abs/1308.6725
Autor:
Friebe, J., Riedmann, M., Wübbena, T., Pape, A., Kelkar, H., Ertmer, W., Terra, O., Sterr, U., Weyers, S., Grosche, G., Schnatz, H., Rasel, E. M.
Publikováno v:
New J. Phys. 13 125010 (2011)
We perform Ramsey-Bord\'e spectroscopy on laser-cooled magnesium atoms in free fall to measure the 1S0 \rightarrow 3P1 intercombination transition frequency. The measured value of 655 659 923 839 730 (48) Hz is consistent with our former atomic beam
Externí odkaz:
http://arxiv.org/abs/1107.3051
Autor:
Falke, St., Schnatz, H., Winfred, J. S. R. Vellore, Middelmann, Th., Vogt, St., Weyers, S., Lipphardt, B., Grosche, G., Riehle, F., Sterr, U., Lisdat, Ch.
Publikováno v:
Metrologia 48 (2011) 399--407
With 87-Sr atoms confined in a one dimensional optical lattice, the frequency of the optical clock transition 5s^2 ^1S_0 - 5s5p ^3P_0 has been determined to be 429 228 004 229 872.9(5) Hz. The transition frequency was measured with the help of a fs-f
Externí odkaz:
http://arxiv.org/abs/1104.4850