Zobrazeno 1 - 10
of 575
pro vyhledávání: '"Lindvall T"'
Publikováno v:
Metrologia 60, 045008 (2023)
We show that in optical clocks based on Rabi interrogation, both laser-frequency and magnetic-field flicker ($1/f$) noise with zero mean can lead to servo errors at the $10^{-18}$ level if the negative-detuning (red) and positive-detuning (blue) side
Externí odkaz:
http://arxiv.org/abs/2306.14781
Autor:
Steinel, M., Shao, H., Filzinger, M., Lipphardt, B., Brinkmann, M., Didier, A., Mehlstäubler, T. E., Lindvall, T., Peik, E., Huntemann, N.
Publikováno v:
Phys. Rev. Lett. 131, 083002 (2023)
We report on an evaluation of an optical clock that uses the $\phantom{}^2S_{1/2} \rightarrow \phantom{}^2D_{5/2}$ transition of a single $^{88}$Sr$^+$ ion as the reference. In contrast to previous work, we estimate the effective temperature of the b
Externí odkaz:
http://arxiv.org/abs/2212.08687
Publikováno v:
J. Appl. Phys. 132, 124401 (2022)
The motion of an ion in a radiofrequency (rf) Paul trap is described by the Mathieu equation and the associated stability parameters that are proportional to the rf and dc electric field gradients. Here, a higher-order, iterative method to accurately
Externí odkaz:
http://arxiv.org/abs/2209.02290
Autor:
Fordell, T., Lindvall, T.
Publikováno v:
J.Opt.Soc.Am. B 36, 415 (2019)
A frequency-stable, broadband laser is presented for experiments on trapped ions. Since the design is based on widely available semiconductor optical amplifier technology, similar lasers can be realized for virtually any wavelength in the near-infrar
Externí odkaz:
http://arxiv.org/abs/1901.08265
Autor:
Baynham, C F A, Curtis, E A, Godun, R M, Jones, J M, Nisbet-Jones, P B R, Baird, P E G, Bongs, K, Gill, P, Fordell, T, Hieta, T, Lindvall, T, Spidell, M T, Lehman, J H
An atom exposed to an electric field will experience Stark shifts of its internal energy levels, proportional to their polarizabilities. In optical frequency metrology, the Stark shift due to background black-body radiation (BBR) modifies the frequen
Externí odkaz:
http://arxiv.org/abs/1801.10134
Autor:
Harding, R. T., Zhou, S., Zhou, J., Lindvall, T., Myers, W. K., Ardavan, A., Briggs, G. A. D., Porfyrakis, K., Laird, E. A.
Publikováno v:
Phys. Rev. Lett. 119, 140801 (2017)
The endohedral fullerene $^{15}\mathrm{N@C}_{60}$ has narrow electron paramagnetic resonance lines which have been proposed as the basis for a condensed-matter portable atomic clock. We measure the low-frequency spectrum of this molecule, identifying
Externí odkaz:
http://arxiv.org/abs/1705.04817
Publikováno v:
Optics Letters, Vol. 40, Issue 8, pp. 1822-1825 (2015)
Future transportable optical clocks require compact and reliable light sources. Here, broadband, unpolarized repumper and state clearout sources for Sr+ single-ion optical clocks are reported. These turn-key devices require no frequency stabilization
Externí odkaz:
http://arxiv.org/abs/1504.04443
Publikováno v:
Phys. Rev. A 87, 013439 (2013)
Many ion species commonly used for laser-cooled ion trapping studies have a low-lying metastable 2D3/2 state that can become populated due to spontaneous emission from the 2P1/2 excited state. This requires a repumper laser to maintain the ion in the
Externí odkaz:
http://arxiv.org/abs/1301.5503
Publikováno v:
Phys. Rev. A 86, 033403 (2012)
We study the formation and destabilization of dark states in a single trapped 88Sr+ ion caused by the cooling and repumping laser fields required for Doppler cooling and fluorescence detection of the ion. By numerically solving the time-dependent den
Externí odkaz:
http://arxiv.org/abs/1212.4685
We describe experiments on trapping of atoms in microscopic magneto-optical traps on an optically transparent permanent-magnet atom chip. The chip is made of magnetically hard ferrite-garnet material deposited on a dielectric substrate. The confining
Externí odkaz:
http://arxiv.org/abs/quant-ph/0601163