Zobrazeno 1 - 10
of 70
pro vyhledávání: '"Pollock, J. W."'
Autor:
Hewatt, D. P., Ellmeier, M., Kiehl, C., Menon, T. S., Pollock, J. W., Regal, C. A., Knappe, S.
Alkali-metal optically-pumped magnetometers are prone to inaccuracies arising from the overlap of the average F = I + 1/2 and F = I - 1/2 ground-state Zeeman resonances. We employ density-matrix simulations and experiments to investigate how this hyp
Externí odkaz:
http://arxiv.org/abs/2408.00898
Autor:
Hafiz, M. Abdel, Vicarini, R., Passilly, N., Calosso, C. E., Maurice, V., Pollock, J. W., Taichenachev, A. V., Yudin, V. I., Kitching, J., Boudot, R.
Publikováno v:
Phys. Rev. Applied 14, 034015 (2020)
Light-shifts are known to be an important limitation to the mid- and long-term fractional frequency stability of different types of atomic clocks. In this article, we demonstrate the experimental implementation of an advanced anti-light shift interro
Externí odkaz:
http://arxiv.org/abs/2005.05096
Autor:
Yudin, V. I., Basalaev, M. Yu., Taichenachev, A. V., Pollock, J. W., Newman, Z. L., Shuker, M., Hansen, A., Hummon, M. T., Boudot, R., Donley, E. A., Kitching, J.
Publikováno v:
Phys. Rev. Applied 14, 024001 (2020)
We show that the light shift in atomic clocks can be suppressed using time variation of the interrogation field intensity. By measuring the clock output at two intensity levels, error signals can be generated that simultaneously stabilize a local osc
Externí odkaz:
http://arxiv.org/abs/1911.02935
Coherent dark states in atoms, created by simultaneous interaction of two coherent light fields with a 3-level system, are of prime importance in quantum state manipulation. They are used extensively in quantum sensing and quantum information applica
Externí odkaz:
http://arxiv.org/abs/1909.02649
Autor:
Shuker, M., Pollock, J. W., Boudot, R., Yudin, V. I., Taichenachev, A. V., Kitching, J., Donley, E. A.
Publikováno v:
Appl. Phys. Lett. 114, 141106 (2019)
Light-induced frequency shifts can be a key limiting contribution to the mid and long-term frequency instability in atomic clocks. In this letter, we demonstrate the experimental implementation of the combined error signal interrogation protocol to a
Externí odkaz:
http://arxiv.org/abs/1903.00566
Autor:
Shuker, M., Pollock, J. W., Boudot, R., Yudin, V. I., Taichenachev, A. V., Kitching, J., Donley, E. A.
Publikováno v:
Phys. Rev. Lett. 122, 113601 (2019)
Sophisticated Ramsey-based interrogation protocols using composite laser pulse sequences have been recently proposed to provide next-generation high-precision atomic clocks with a near perfect elimination of frequency shifts induced during the atom-p
Externí odkaz:
http://arxiv.org/abs/1812.01703
Autor:
Yudin, V. I., Taichenachev, A. V., Basalaev, M. Yu., Zanon-Willette, T., Mehlstaubler, T. E., Pollock, J. W., Shuker, M., Donley, E. A., Kitching, J.
Publikováno v:
New J. Phys. 20, 123016 (2018)
We have developed a universal method to form the reference signal for the stabilization of arbitrary atomic clocks based on Ramsey spectroscopy. Our approach uses an interrogation scheme of the atomic system with two different Ramsey periods and a sp
Externí odkaz:
http://arxiv.org/abs/1807.10158
Autor:
Pollock, J. W., Yudin, V. I., Shuker, M., Basalaev, M. Yu., Taichenachev, A. V., Liu, X., Kitching, J., Donley, E. A.
Publikováno v:
Phys. Rev. A 98, 053424 (2018)
The off-resonant AC Stark shift for coherent population trapping (CPT) resonances probed with Ramsey spectroscopy is investigated experimentally and theoretically. Measurements with laser-cooled $^{87}$Rb atoms show excellent quantitative agreement w
Externí odkaz:
http://arxiv.org/abs/1805.06029
Autor:
Yudin, V. I., Taichenachev, A. V., Basalaev, M. Yu., Zanon-Willette, T., Pollock, J. W., Shuker, M., Donley, E. A., Kitching, J.
Publikováno v:
Phys. Rev. Applied 9, 054034 (2018)
When performing precision measurements, the quantity being measured is often perturbed by the measurement process itself. This includes precision frequency measurements for atomic clock applications carried out with Ramsey spectroscopy. With the aim
Externí odkaz:
http://arxiv.org/abs/1712.03365
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