Article

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; Guéna, J; Abgrall, M; Rovera, D; Chupin, B; Shi, C; Bilicki, S; Bookjans, E; Lodewyck, J; Le Targat, R; 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 (2020) Direct comparisons of European primary and secondary frequency standards via satellite techniques. Metrologia, 57 (4). 045005 ISSN 0026-1394

Baynham, C F A; Godun, R M; Jones, J M; King, S A; Nisbet-Jones, P B R; Baynes, F; Rolland, A; Baird, P E G; Bongs, K; Gill, P; Margolis, H S (2018) Absolute frequency measurement of the S-2(1/2) - F-2(7/2) optical clock transition in Yb-171(+) with an uncertainty of 4 x 10(-16) using a frequency link to international atomic time. Journal of Modern Optics, 65 (5-6). pp. 585-591. ISSN 0950-0340

Leute, J*; Huntemann, N*; Lipphardt, B*; Tamm, C*; Nisbet-Jones, P B R; King, S A; Godun, R M*; Jones, J M*; Margolis, H S; Whibberley, P B; Wallin, A*; Merimaa, M*; Gill, P; Peik, E* (2016) Frequency comparison of 171Yb+ ion optical clocks at PTB and NPL via GPS PPP. IEEE Trans. Ultrason. Feroelectr. Freq. Control, 63 (7). pp. 981-985.

Hobson, R; Bowden, W; King, S A; Baird, P E G*; Hill, I R; Gill, P (2016) Modified hyper-Ramsey methods for the elimination of probe shifts in optical clocks. Phys. Rev. A, 93 (1). 010501

Barwood, G P; Huang, G; King, S A; Klein, H A; Gill, P (2016) Trapped-ion 88Sr+ optical clock systematic uncertainties - AC Stark shift determination. J. Phys.: Conf. Ser., 723. 012024

Nisbet-Jones, P B R; King, S A; Jones, J M; Godun, R M; Baynham, C F A; Bongs, K*; Dolezal, M*; Balling, P*; Gill, P (2016) A single-ion trap with minimized ion-environment interactions. Appl. Phys. B, Laser Opt., 122 (3). p. 57.

Dolezal, M*; Balling, P*; Nisbet-Jones, P B R; King, S A; Jones, J M; Klein, H A; Gill, P; Lindvall, T*; Wallin, A E*; Merimaa, M*; Tamm, C*; Sanner, C*; Huntemann, N*; Scharnhorst, N*; Leroux, I D*; Schmidt, P O*; Burgermeister, T*; Mehlstaubler, T E*; Peik, E* (2015) Analysis of thermal radiation in ion traps for optical frequency standards. Metrologia, 52 (6). pp. 842-856.

Barwood, G P; Huang, G; King, S A; Klein, H A; Gill, P (2015) Frequency noise processes in a strontium ion optical clock. J. Phys. B, At. Mol. Opt. Phys., 48 (3). 035401

Barwood, G P; Huang, G; Klein, H A; Johnson, L A M; King, S A; Margolis, H S; Szymaniec, K; Gill, P (2014) Agreement between two 88Sr+ optical clocks to 4 parts in 10^17. Phys. Rev. A, 89 (5). 050501

Godun, R M; Nisbet-Jones, P B R; Jones, J M; King, S A; Johnson, L A M; Margolis, H S; Szymaniec, K; Lea, S N; Bongs, K*; Gill, P (2014) Frequency ratio of two optical clock transitions in 171Yb+ and constraints on the time-variation of fundamental constants. Phys. Rev. Lett., 113 (21). 210801

King, S A; Godun, R M; Webster, S A; Margolis, H S; Johnson, L A M; Szymaniec, K; Baird, P E G*; Gill, P (2012) Absolute frequency measurement of the 2S- 1/2 - 2F-2 7/2) electric octupole transition in a single ion of Yb-171(+) with 10(-15) fractional uncertainty. New J. Phys., 14 (1). 013045

Conference or Workshop Item

Godun, R M; Baynham, C F A; Jones, J M; King, S A; Nisbet-Jones, P B R; Baynes, F; Rolland, A; Baird, P E G; Bongs, K; Gill, P; Petit, G; Margolis, H S (2018) Absolute frequency measurement of the ytterbium ion E3 optical clock transition using international atomic time. In: 2018 European Frequency and Time Forum (EFTF), 10-12 April 2018, Turin, Italy.