Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Robertson, Billy"'
Autor:
Tofful, Alexandra, Baynham, Charles F. A., Curtis, E. Anne, Parsons, Adam O., Robertson, Billy I., Schioppo, Marco, Tunesi, Jacob, Margolis, Helen S., Hendricks, Richard J., Whale, Josh, Thompson, Richard C., Godun, Rachel M.
A full evaluation of the uncertainty budget for the ytterbium ion optical clock at the National Physical Laboratory (NPL) was performed on the electric octupole (E3) $^2\mathrm{S}_{1/2}\,\rightarrow\, ^2\mathrm{F}_{7/2}$ transition. The total systema
Externí odkaz:
http://arxiv.org/abs/2403.14423
Autor:
Spampinato, Alessio, Stacey, Jonathan, Mulholland, Sean, Robertson, Billy I., Klein, Hugh A., Huang, Guilong, Barwood, Geoffrey P., Gill, Patrick
Optical atomic clocks demonstrate a better stability and lower systematic uncertainty than the highest performance microwave atomic clocks. However, the best performing optical clocks have a large footprint in a laboratory environment and require spe
Externí odkaz:
http://arxiv.org/abs/2401.12706
Autor:
Sherrill, Nathaniel, Parsons, Adam O., Baynham, Charles F. A., Bowden, William, Curtis, E. Anne, Hendricks, Richard, Hill, Ian R., Hobson, Richard, Margolis, Helen S., Robertson, Billy I., Schioppo, Marco, Szymaniec, Krzysztof, Tofful, Alexandra, Tunesi, Jacob, Godun, Rachel M., Calmet, Xavier
Publikováno v:
New J.Phys. 25 (2023) 9, 093012
We present a new framework to study the time variation of fundamental constants in a model-independent way. Model independence implies more free parameters than assumed in previous studies. Using data from atomic clocks based on $^{87}$Sr, $^{171}$Yb
Externí odkaz:
http://arxiv.org/abs/2302.04565
Autor:
Robertson, Billy I., MacKellar, Andrew R., Halket, James, Gribbon, Anna, Pritchard, Jonathan D., Arnold, Aidan S., Riis, Erling, Griffin, Paul F.
Publikováno v:
Phys. Rev. A 96, 053622 (2017)
An atom interferometer using a Bose-Einstein condensate of $^{87}$Rb atoms is utilized for the measurement of magnetic field gradients. Composite optical pulses are used to construct a spatially symmetric Mach-Zehnder geometry. Using a biased interfe
Externí odkaz:
http://arxiv.org/abs/1707.07600
Autor:
ROBERTSON, BILLY, CHEUNG, ELIZABETH
Publikováno v:
Antiques to Vintage; Winter2024, Issue 91, p66-68, 3p, 5 Color Photographs
Autor:
ROBERTSON, BILLY, CHEUNG, ELIZABETH
Publikováno v:
Antiques to Vintage; Summer2023/2024, Issue 89, p62-64, 3p, 10 Color Photographs
Autor:
ROBERTSON, BILLY, CHEUNG, ELIZABETH
Publikováno v:
Antiques to Vintage; Winter2023, Issue 87, p64-66, 3p, 6 Color Photographs
Autor:
ROBERTSON, BILLY, CHEUNG, ELIZABETH
Publikováno v:
Antiques to Vintage; Autumn2023, Issue 86, p64-66, 3p, 5 Color Photographs
Autor:
CHEUNG, ELIZABETH, ROBERTSON, BILLY
Publikováno v:
Antiques to Vintage; Winter2024, Issue 91, p22-22, 1p, 1 Color Photograph
Autor:
ROBERTSON, BILLY, CHEUNG, ELIZABETH
Publikováno v:
Antiques to Vintage; Spring2023, Issue 88, p44-45, 2p, 5 Color Photographs