Results 21 to 30 of about 2,598,112 (267)

A simplified optical lattice clock [PDF]

Applied Physics B, 2009
Existing optical lattice clocks demonstrate a high level of performance, but they remain complex experimental devices. In order to address a wider range of applications including those requiring transportable devices, it will be necessary to simplify the laser systems and reduce the amount of support hardware.
POLI, NICOLA, M. G. Tarallo, SCHIOPPO, MARCO, C. W. Oates, TINO, GUGLIELMO MARIA   +4 more
openaire   +4 more sources

Frequency Ratio of 199Hg and 87Sr Optical Lattice Clocks beyond the SI Limit [PDF]

, 2015
We report on a frequency ratio measurement of a Hg199-based optical lattice clock referencing a Sr87-based clock. Evaluations of lattice light shift, including atomic-motion-dependent shift, enable us to achieve a total systematic uncertainty of 7.2×10 ...
Katori Hidetoshi, Ushijima Ichiro, Ohmae Noriaki, Yamanaka Kazuhiro, Takamoto Masao   +4 more
core   +1 more source

Precision frequency metrology with optical lattice clocks [PDF]

, 2019
Strontium optical lattice clocks are proven to be excellent timekeepers. Their exceptional performance makes them a leading candidate for possible redefinition of the SI second and a valuable tool for searching for new physics beyond the standard model ...
William Bowden, Bowden, William
core   +1 more source

A clock network for geodesy and fundamental science

Nature Communications, 2016
Comparing the frequency of two distant optical clocks will enable sensitive tests of fundamental physics. Here, the authors compare two strontium optical-lattice clocks 690 kilometres apart to a degree of accuracy that is limited only by the uncertainty ...
C. Lisdat, G. Grosche, N. Quintin, C. Shi, S.M.F. Raupach, C. Grebing, D. Nicolodi, F. Stefani, A. Al-Masoudi, S. Dörscher, S. Häfner, J.-L. Robyr, N. Chiodo, S. Bilicki, E. Bookjans, A. Koczwara, S. Koke, A. Kuhl, F. Wiotte, F. Meynadier, E. Camisard, M. Abgrall, M. Lours, T. Legero, H. Schnatz, U. Sterr, H. Denker, C. Chardonnet, Y. Le Coq, G. Santarelli, A. Amy-Klein, R. Le Targat, J. Lodewyck, O Lopez, P.-E. Pottie   +34 more
doaj   +1 more source

Demonstration of the Systematic Evaluation of an Optical Lattice Clock Using the Drift-Insensitive Self-Comparison Method

Applied Sciences, 2021
The self-comparison method is a powerful tool in the uncertainty evaluation of optical lattice clocks, but any drifts will cause a frequency offset between the two compared clock loops and thus lead to incorrect measurement result.
Chihua Zhou, Xiaotong Lu, Benquan Lu, Yebing Wang, Hong Chang   +4 more
doaj   +1 more source

Cancellation of collisional frequency shifts in optical lattice clocks with Rabi spectroscopy

New Journal of Physics, 2016
We analyze both the s- and p -wave collision induced frequency shifts and propose an over- π pulse scheme to cancel the shifts in optical lattice clocks interrogated by a Rabi pulse.
Sangkyung Lee, Chang Yong Park, Won-Kyu Lee, Dai-Hyuk Yu   +3 more
doaj   +1 more source

Planar-Waveguide External Cavity Laser Stabilization for an Optical Link with 1E-19 Frequency Stability [PDF]

, 2011
We stabilized the frequency of a compact planar-waveguide external cavity laser (ECL) on a Fabry-P\'erot cavity (FPC) through a Pound-Drever-Hall scheme.
Davide Calonico, Filippo Levi, COSTANZO, Giovanni Antonio, Alberto Mura, Claudio E. Calosso, Godone, Aldo, A. Godone, G. A. Costanzo, Claudio, E., Godone A., A. Mura, Aldo Godone, Mura A, Calonico, Davide, Giovanni, A., CALOSSO, CLAUDIO ELIGIO, Mura, Alberto, D. Calonico, Clivati, Cecilia, C. E. Calosso, Levi, Filippo, C. Clivati, F. Levi, Costanzo GA   +23 more
core   +1 more source

Terahertz Vibrational Molecular Clock with Systematic Uncertainty at the 10^{-14} Level

Physical Review X, 2023
Neutral quantum absorbers in optical lattices have emerged as a leading platform for achieving clocks with exquisite spectroscopic resolution. However, the studies of these clocks and their systematic shifts have so far been limited to atoms.
K. H. Leung, B. Iritani, E. Tiberi, I. Majewska, M. Borkowski, R. Moszynski, T. Zelevinsky   +6 more
doaj   +1 more source

THE Yb OPTICAL LATTICE CLOCK

Frequency Standards and Metrology, 2009
At the previous Symposium on Frequency Standards and Metrology, H. Katori proposed using IS0 ---->3pO transitions in alkaline earth like atoms to make high performance optical clocks based on large numbers of neutral atoms tightly confined in an optical lattice.
N. D. Lemke, A. D. Ludlow, Z. W. Barber, POLI, NICOLA, C. W. Hoyt, L. S. Ma, J. E. Stalnaker, C. W. Oates, L. Hollberg, J. C. Bergquist, A. Brush, T. M. Fortier, S. A. Diddams, T. Heavner, S. Jefferts, T. Parker   +15 more
openaire   +1 more source

Systematic uncertainties in strontium optical lattice clocks

, 2020
International audienceCurrent optical clocks have already overcome theperformances of microwave standard clocks and now reach the10e−18 uncertainty.
Foucault, Yannick, Moreno, William, Lodewyck, Jérôme, Le Targat, Rodolphe, Alves, Bruno Ximenez Rodrigues   +4 more
core   +5 more sources