Zobrazeno 1 - 10
of 253
pro vyhledávání: '"Hobson, R. P."'
Autor:
Pasatembou, E., Baynham, C. F. A., Buchmüller, O., Evans, D., Hobson, R., Iannizzotto-Venezze, L., Josset, A.
Long-baseline atom interferometers, such as the one to be built by the AION collaboration, require ultra-cold atomic clouds. These are produced by trapping the atoms in Magneto-Optical Traps (MOTs) using high-power, narrow-linewidth lasers. We report
Externí odkaz:
http://arxiv.org/abs/2310.08500
Autor:
Stray, B., Ennis, O., Hedges, S., Dey, S., Langlois, M., Bongs, K., Lellouch, S., Holynski, M., Bostwick, B., Chen, J., Eyler, Z., Gibson, V., Harte, T. L., Hsu, M., Karzazi, M., Mitchell, J., Mouelle, N., Schneider, U., Tang, Y., Tkalcec, K., Zhi, Y., Clarke, K., Vick, A., Bridges, K., Coleman, J., Elertas, G., Hawkins, L., Hindley, S., Hussain, K., Metelko, C., Throssell, H., Baynham, C. F. A., Buchmuller, O., Evans, D., Hobson, R., Iannizzotto-Venezze, L., Josset, A., Pasatembou, E., Sauer, B. E., Tarbutt, M. R., Badurina, L, Beniwal, A., Blas, D., Carlton, J., Ellis, J., McCabe, C., Bentine, E., Booth, M., Bortoletto, D., Foot, C., Gomez, C., Hird, T., Hughes, K., James, A., Lowe, A., March-Russell, J., Schelfhout, J., Shipsey, I., Weatherill, D., Wood, D., Balashov, S., Bason, M. G., Boehm, J., Courthold, M., van der Grinten, M., Majewski, P., Marchant, A. L., Newbold, D., Pan, Z., Tam, Z., Valenzuela, T., Wilmut, I.
This paper outlines the centralised design and production of the Ultra-High-Vacuum sidearm and Laser-Stabilisation systems for the AION Ultra-Cold Strontium Laboratories. Commissioning data on the residual gas and steady-state pressures in the sidear
Externí odkaz:
http://arxiv.org/abs/2305.20060
Autor:
Arduini, G., Badurina, L., Balazs, K., Baynham, C., Buchmueller, O., Buzio, M., Calatroni, S., Corso, J. -P., Ellis, J., Gaignant, Ch., Guinchard, M., Hakulinen, T., Hobson, R., Infantino, A., Lafarge, D., Langlois, R., Marcel, C., Mitchell, J., Parodi, M., Pentella, M., Valuch, D., Vincke, H.
We present results from exploratory studies, supported by the Physics Beyond Colliders (PBC) Study Group, of the suitability of a CERN site and its infrastructure for hosting a vertical atom interferometer (AI) with a baseline of about 100 m. We firs
Externí odkaz:
http://arxiv.org/abs/2304.00614
Autor:
Badurina, L., Bentine, E., Blas, D., Bongs, K., Bortoletto, D., Bowcock, T., Bridges, K., Bowden, W., Buchmueller, O., Burrage, C., Coleman, J., Elertas, G., Ellis, J., Foot, C., Gibson, V., Haehnelt, M. G., Harte, T., Hedges, S., Hobson, R., Holynski, M., Jones, T., Langlois, M., Lellouch, S., Lewicki, M., Maiolino, R., Majewski, P., Malik, S., March-Russell, J., McCabe, C., Newbold, D., Sauer, B., Schneider, U., Shipsey, I., Singh, Y., Uchida, M. A., Valenzuela, T., van der Grinten, M., Vaskonen, V., Vossebeld, J., Weatherill, D., Wilmut, I.
We outline the experimental concept and key scientific capabilities of AION (Atom Interferometer Observatory and Network), a proposed UK-based experimental programme using cold strontium atoms to search for ultra-light dark matter, to explore gravita
Externí odkaz:
http://arxiv.org/abs/1911.11755
Autor:
Riedel, F., Al-Masoudi, A., Benkler, E., Dörscher, S., Gerginov, V., Grebing, C., Häfner, S., Huntemann, N., Lipphardt, B., Lisdat, C., Peik, E., Piester, D., Sanner, C., Tamm, C., Weyers, S., Denker, H., Timmen, L., Voigt, C., Calonico, D., Cerretto, G., Costanzo, G. A., Levi, F., Sesia, I., Achkar, J., Guèna, J., Abgrall, M., Rovera, D., Chupin, B., Shi, C., Bilicki, S., Bookjans, E., Lodewyck, J., Targat, R. Le, Delva, P., Bize, S., Baynes, F. N., Baynham, C. F. A., Bowden, W., Gill, P., Godun, R. M., Hill, I. R., Hobson, R., Jones, J. M., King, S. A., Nisbet-Jones, P. B. R., Rolland, A., Shemar, S. L., Whibberley, P. B., Margolis, H. S.
We carried out a 26-day comparison of five simultaneously operated optical clocks and six atomic fountain clocks located at INRIM, LNE-SYRTE, NPL and PTB by using two satellite-based frequency comparison techniques: broadband Two-Way Satellite Time a
Externí odkaz:
http://arxiv.org/abs/1910.06736
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
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
Publikováno v:
Phys. Rev. A 93, 010501 (2016)
We develop a method of modified hyper-Ramsey spectroscopy in optical clocks, achieving complete immunity to the frequency shifts induced by the probing fields themselves. Using particular pulse sequences with tailored phases, frequencies, and duratio
Externí odkaz:
http://arxiv.org/abs/1510.08144
Akademický článek
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Publikováno v:
Epidemiology and Infection, 1995 Feb 01. 114(1), 93-103.
Externí odkaz:
https://www.jstor.org/stable/3864183
