Zobrazeno 1 - 10
of 203
pro vyhledávání: '"Fitch, P. J."'
Autor:
White, A. D., Popa, S., Mellado-Munoz, J., Fitch, N. J., Sauer, B. E., Lim, J., Tarbutt, M. R.
We study the properties of a cryogenic buffer gas source that uses a low temperature two-stage buffer gas cell to produce very slow beams of ytterbium monofluoride molecules. The molecules are produced by laser ablation inside the cell and extracted
Externí odkaz:
http://arxiv.org/abs/2408.01862
Autor:
Barontini, G., Blackburn, L., Boyer, V., Butuc-Mayer, F., Calmet, X., Lopez-Urrutia, J. R. Crespo, Curtis, E. A., Darquie, B., Dunningham, J., Fitch, N. J., Forgan, E. M., Georgiou, K., Gill, P., Godun, R. M., Goldwin, J., Guarrera, V., Harwood, A. C., Hill, I. R., Hendricks, R. J., Jeong, M., Johnson, M. Y. H., Keller, M., Sajith, L. P. Kozhiparambil, Kuipers, F., Margolis, H. S., Mayo, C., Newman, P., Parsons, A. O., Prokhorov, L., Robertson, B. I., Rodewald, J., Safronova, M. S., Sauer, B. E., Schioppo, M., Sherrill, N., Stadnik, Y. V., Szymaniec, K., Tarbutt, M. R., Thompson, R. C., Tofful, A., Tunesi, J., Vecchio, A., Wang, Y., Worm, S.
Publikováno v:
EPJ Quantum Technology volume 9, Article number: 12 (2022)
The detection of variations of fundamental constants of the Standard Model would provide us with compelling evidence of new physics, and could lift the veil on the nature of dark matter and dark energy. In this work, we discuss how a network of atomi
Externí odkaz:
http://arxiv.org/abs/2112.10618
Autor:
Barontini, G., Boyer, V., Calmet, X., Fitch, N. J., Forgan, E. M., Godun, R. M., Goldwin, J., Guarrera, V., Hill, I. R., Jeong, M., Keller, M., Kuipers, F., Margolis, H. S., Newman, P., Prokhorov, L., Rodewald, J., Sauer, B. E., Schioppo, M., Sherrill, N., Tarbutt, M. R., Vecchio, A., Worm, S.
Publikováno v:
Proc. SPIE 11881, Quantum Technology: Driving Commercialisation of an Enabling Science II, 118810K (2021)
The QSNET consortium is building a UK network of next-generation atomic and molecular clocks that will achieve unprecedented sensitivity in testing variations of the fine structure constant, $\alpha$, and the electron-to-proton mass ratio, $\mu$. Thi
Externí odkaz:
http://arxiv.org/abs/2110.05944
Autor:
Alauze, X., Lim, J., Trigatzis, M. A., Swarbrick, S., Collings, F. J., Fitch, N. J., Sauer, B. E., Tarbutt, M. R.
Publikováno v:
Quantum Sci. Technol. 6, 044005 (2021)
We use two-dimensional transverse laser cooling to produce an ultracold beam of YbF molecules. Through experiments and numerical simulations, we study how the cooling is influenced by the polarization configuration, laser intensity, laser detuning an
Externí odkaz:
http://arxiv.org/abs/2104.06194
Autor:
Fitch, N. J., Tarbutt, M. R.
Publikováno v:
Adv. At. Mol. Opt. Phys. 70, 157-262 (2021)
The last few years have seen rapid progress in the application of laser cooling to molecules. In this review, we examine what kinds of molecules can be laser cooled, how to design a suitable cooling scheme, and how the cooling can be understood and m
Externí odkaz:
http://arxiv.org/abs/2103.00968
Autor:
Jurgilas, S., Chakraborty, A., Rich, C. J. H., Caldwell, L., Williams, H. J., Fitch, N. J., Sauer, B. E., Frye, Matthew D., Hutson, Jeremy M., Tarbutt, M. R.
Publikováno v:
Phys. Rev. Lett. 126, 153401 (2021)
We prepare mixtures of ultracold CaF molecules and Rb atoms in a magnetic trap and study their inelastic collisions. When the atoms are prepared in the spin-stretched state and the molecules in the spin-stretched component of the first rotationally e
Externí odkaz:
http://arxiv.org/abs/2101.01580
Publikováno v:
Quantum Sci. Technol. 6, 014006 (2021)
Measurements of the electron's electric dipole moment (eEDM) are demanding tests of physics beyond the Standard Model. We describe how ultracold YbF molecules could be used to improve the precision of eEDM measurements by two to three orders of magni
Externí odkaz:
http://arxiv.org/abs/2009.00346
Autor:
Ho, C. J., Devlin, J. A., Rabey, I. M., Yzombard, P., Lim, J., Wright, S. C., Fitch, N. J., Hinds, E. A., Tarbutt, M. R., Sauer, B. E.
Publikováno v:
New J. Phys. 22 053031 (2020)
The electric dipole moment of the electron (eEDM) can be measured with high precision using heavy polar molecules. In this paper, we report on a series of new techniques that have improved the statistical sensitivity of the YbF eEDM experiment. We in
Externí odkaz:
http://arxiv.org/abs/2002.02332
Publikováno v:
Phys. Rev. A 101, 032703 (2020)
Measurements of interactions between cold molecules and ultracold atoms can allow for a detailed understanding of fundamental collision processes. These measurements can be done using various experimental geometries including where both species are i
Externí odkaz:
http://arxiv.org/abs/2001.02317
Autor:
Caldwell, L., Williams, H. J., Fitch, N. J., Aldegunde, J., Hutson, Jeremy M., Sauer, B. E., Tarbutt, M. R.
Publikováno v:
Phys. Rev. Lett. 124, 063001 (2020)
Polar molecules in superpositions of rotational states exhibit long-range dipolar interactions, but maintaining their coherence in a trapped sample is a challenge. We present calculations that show many laser-coolable molecules have convenient rotati
Externí odkaz:
http://arxiv.org/abs/1908.11839