Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Arnold, Kyle"'
We review our progress in developing a frequency reference with singly ionized lutetium and give estimates of the levels of inaccuracy we expect to achieve in the near future with both the $^1S_0\leftrightarrow{}^3D_1$ and $^1S_0\leftrightarrow{}^3D_
Externí odkaz:
http://arxiv.org/abs/2404.16414
We experimentally demonstrate agreement between two $^{176}$Lu$^+$ frequency references using correlation spectroscopy. From a comparison at different magnetic fields, we obtain a quadratic Zeeman coefficient of $-4.89264(88)\,\mathrm{Hz/mT^2}$, whic
Externí odkaz:
http://arxiv.org/abs/2212.04652
Autor:
Arnold, Kyle J., Kaewuam, Rattakorn, Chanu, Sapam R., Tan, Ting Rei, Zhang, Zhiqiang, Barrett, Murray D.
Publikováno v:
Phys. Rev. Lett. 124, 193001 (2020)
Measurement of the $^{138}$Ba$^+$ ${}^2S_{1/2} - {}^2D_{5/2}$ clock transition frequency and $D_{5/2}$ Land\'e $g_J$ factor are reported. The clock transition frequency $\nu_{\mathrm{Ba}^+}=170\,126\,432\,449\,333.31\pm(0.39)_\mathrm{stat}\pm(0.29)_\
Externí odkaz:
http://arxiv.org/abs/1906.09150
Autor:
Tan, Ting Rei, Kaewuam, Rattakorn, Arnold, Kyle J., Chanu, Sapam R., Zhang, Zhiqiang, Safronova, Marianna, Barrett, Murray D.
Publikováno v:
Phys. Rev. Lett. 123, 063201 (2019)
We demonstrate precision measurement and control of inhomogeneous broadening in a multi-ion clock consisting of three $^{176}$Lu$^+$ ions. Microwave spectroscopy between hyperfine states in the $^3D_1$ level is used to characterise differential syste
Externí odkaz:
http://arxiv.org/abs/1905.03486
Publikováno v:
Phys. Rev. A 99, 022515 (2019)
The influence of oscillating quadrupole fields on atomic energy levels is examined theoretically and general expressions for the quadrupole matrix elements are given. The results are relevant to any ion-based clock in which one of the clock states su
Externí odkaz:
http://arxiv.org/abs/1811.10177
Publikováno v:
Nature Communications 9: 1650 (2018)
We measure the dynamic differential scalar polarizabilities at 10.6 $\mu$m for two candidate clock transitions in $^{176}\mathrm{Lu}^+$. The fractional black body radiation (BBR) shifts at 300 K for the $^1S_0 \leftrightarrow {^3D_1}$ and $^1S_0 \lef
Externí odkaz:
http://arxiv.org/abs/1712.00240
Publikováno v:
Phys. Rev. A 94, 052512 (2016)
We report the first laser spectroscopy of the $^1$S$_0$ to $^3$D$_1$ clock transition in $^{175}$Lu$^+$. Clock operation is demonstrated on three pairs of Zeeman transitions, one pair from each hyperfine manifold of the $^3$D$_1$ term. We measure the
Externí odkaz:
http://arxiv.org/abs/1609.00479
Autor:
Arnold, Kyle J., Barrett, M. D.
Publikováno v:
Phys. Rev. Lett. 117, 160802 (2016)
We show that it is possible to significantly reduce quadrupole and tensor polarizability shifts of a clock transition by operating at a judiciously chosen field-insensitive point. In some cases shifts are almost completely eliminated making the trans
Externí odkaz:
http://arxiv.org/abs/1607.04344
Publikováno v:
Phys. Rev. A 92, 032108 (2015)
We investigate the feasibility of precision frequency metrology with large ion crystals. For clock candidates with a negative differential static polarisability, we show that micromotion effects should not impede the performance of the clock. Using L
Externí odkaz:
http://arxiv.org/abs/1507.02028