Zobrazeno 1 - 10
of 232
pro vyhledávání: '"Z W Barber"'
Autor:
Jason Stalnaker, Michael J. Martin, Tanya Zelevinsky, Andrew D. Ludlow, Nathan D. Lemke, Gretchen K. Campbell, M. H. G. de Miranda, Y. Le Coq, Z. W. Barber, Nicola Poli, Tara M. Fortier, Martin M. Boyd, Kristin M. Beck, Christopher W. Oates, Sebastian Blatt, Scott A. Diddams, Jun Ye, Seth M. Foreman, Jan W. Thomsen
Publikováno v:
Science. 319:1805-1808
Optical atomic clocks promise timekeeping at the highest precision and accuracy, owing to their high operating frequencies. Rigorous evaluations of these clocks require direct comparisons between them. We have realized a high-performance remote compa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0cb65e90f3c72b5c803109308c1fd5db
https://doi.org/10.1126/science.1153341
https://doi.org/10.1126/science.1153341
Autor:
Z. W. Barber, Windell H. Oskay, G. Wilpers, Christopher W. Oates, J. C. Bergquist, Scott A. Diddams, Leo W. Hollberg, C. W. Hoyt
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 38:S469-S495
For more than 100 years, optical atomic/molecular frequency references have played important roles in science and technology, and provide standards enabling precision measurements. Frequency-stable optical sources have been central to experimental te
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73733898157f8c4946cc7d4be67c0c3c
https://doi.org/10.1088/0953-4075/38/9/003
https://doi.org/10.1088/0953-4075/38/9/003
Autor:
Alexey V. Taichenachev, Nathan D. Lemke, Andrew D. Ludlow, Uwe Sterr, Z. W. Barber, Fritz Riehle, Ch. Lisdat, Valeriy I. Yudin, Christopher W. Oates
We present non-standard optical Ramsey schemes that use pulses individually tailored in duration, phase, and frequency to cancel spurious frequency shifts related to the excitation itself. In particular, the field shifts and their uncertainties of Ra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c85605eb4aa8735c6f4d898bced94bbf
http://arxiv.org/abs/0910.5948
http://arxiv.org/abs/0910.5948
Autor:
Nathan D. Lemke, M. M. Boyd, Michael J. Martin, Sergey G. Porsev, Andrew D. Ludlow, Sebastian Blatt, Jan W. Thomsen, Travis Nicholson, Matthew Swallows, Christopher W. Oates, Gretchen K. Campbell, T.M. Fortier, Jun Ye, Z. W. Barber, Scott A. Diddams
Publikováno v:
Frequency Standards and Metrology.
Quantum state engineering of ultracold matter and precise control of optical fields have together allowed accurate measurement of light-matter interactions for applications in precision tests of fundamental physics. State-of-the-art lasers maintain o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1280083455ea614a5881850303c5949e
https://doi.org/10.1142/9789812838223_0007
https://doi.org/10.1142/9789812838223_0007
Autor:
Steven R. Jefferts, Thomas P. Heavner, Thomas E. Parker, Christopher W. Oates, Z. W. Barber, Andrew D. Ludlow, Scott A. Diddams, Yanyi Jiang, Nathan D. Lemke, Tara M. Fortier
Publikováno v:
Physical review letters. 103(6)
We experimentally investigate an optical clock based on {sup 171}Yb (I=1/2) atoms confined in an optical lattice. We have evaluated all known frequency shifts to the clock transition, including a density-dependent collision shift, with a fractional u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::efd8e5b464c0af5f80c73aaed0897587
https://pubmed.ncbi.nlm.nih.gov/19792559
https://pubmed.ncbi.nlm.nih.gov/19792559
Autor:
J. C. Bergquist, Tara M. Fortier, Christopher W. Oates, Thomas P. Heavner, L . Ma, Z. W. Barber, Leo W. Hollberg, Steven R. Jefferts, Scott A. Diddams, Nicola Poli, Jason Stalnaker, A. Brusch, Thomas E. Parker, Nathan D. Lemke
Publikováno v:
Physical Review A. 77
We report an uncertainty evaluation of an optical lattice clock based on the $^{1}{S}_{0}\ensuremath{\leftrightarrow}^{3}{P}_{0}$ transition in the bosonic isotope $^{174}\mathrm{Yb}$ by use of magnetically induced spectroscopy. The absolute frequenc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::993d4b0c380d62b9b828dbb3a5d17fd9
https://doi.org/10.1103/physreva.77.050501
https://doi.org/10.1103/physreva.77.050501
Autor:
Andrew D. Ludlow, Gretchen K. Campbell, J.C. Bergquist, Seth M. Foreman, Christopher W. Oates, Jason Stalnaker, Nicola Poli, Mark A. Kasevich, Michael C. Martin, Leo W. Hollberg, T. M. Foetier, Scott A. Diddams, Sebastian Blatt, Tanya Zelevinsky, Z. W. Barber, Jun Ye, M. M. Boyd, M. H. G. de Miranda
Publikováno v:
Scopus-Elsevier
We report on our recent evaluations of stability and accuracy of the JILA Sr optical lattice clock. We discuss precision tools for the lattice clock, including a stabilized clock laser with sub-Hz linewidth, fs-comb based technology allowing accurate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c34c93444126f20206d0e9e8655a5daa
http://hdl.handle.net/2158/776503
http://hdl.handle.net/2158/776503
Autor:
Alexey V. Taichenachev, V. I. Yudin, C. W. Hoyt, Scott A. Diddams, Tara M. Fortier, Nathan D. Lemke, Jason Stalnaker, Z. W. Barber, Leo W. Hollberg, Nicola Poli, Christopher W. Oates
Publikováno v:
Physical review letters. 100(10)
We present an experimental study of the lattice induced light shifts on the 1S_0-3P_0 optical clock transition (v_clock~518 THz) in neutral ytterbium. The ``magic'' frequency, v_magic, for the 174Yb isotope was determined to be 394 799 475(35)MHz, wh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::53137b9bc7af6c4c2f92f816798274aa
https://pubmed.ncbi.nlm.nih.gov/18352181
https://pubmed.ncbi.nlm.nih.gov/18352181
Autor:
Leo W. Hollberg, Christopher W. Oates, C. W. Hoyt, Tara M. Fortier, Scott A. Diddams, Jason Stalnaker, Z. W. Barber, Y. Le Coq
This talk presents two different types of neutral atom optical clocks and emphasizes the systems' differences in potential performance and complexity. Approaches in attaining high stability, high accuracy, and transportable optical atomic clocks are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da1675a0e5a7b9937005e613c39c9e29
https://zenodo.org/record/1275291
https://zenodo.org/record/1275291
Autor:
Z. W. Barber, T.M. Fortier, Leo W. Hollberg, Christopher W. Oates, C. W. Hoyt, Jason Stalnaker, Scott A. Diddams
Publikováno v:
2007 IEEE International Frequency Control Symposium Joint with the 21st European Frequency and Time Forum.
We describe a new laser system we have developed to probe the ultra-narrow 1S0 harr 3P0 clock transition at 578 nm in neutral ytterbium. The yellow light is produced by sum frequency generation in a periodically poled waveguide. With approximately 10
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b16196eabc47d7c49b39ec64ab94d354
https://doi.org/10.1109/freq.2007.4319281
https://doi.org/10.1109/freq.2007.4319281