Zobrazeno 1 - 10
of 16
pro vyhledávání: '"K. Richard Overstreet"'
Autor:
Xianli Zhang, Jay Noble, Jonathan Tallant, Hyunwook Park, Michelle Nguyen, Jackie Ellett, Dan Boschen, Mike Silveira, Cody Dutra, Luan Vo, Anders Herrmann, Kevin Wellwood, Armando Martins, K. Richard Overstreet
Publikováno v:
Proceedings of the 54th Annual Precise Time and Time Interval Systems and Applications Meeting.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::04ec2c52219d9daf1a7dcd43d71443d1
https://doi.org/10.33012/2023.18685
https://doi.org/10.33012/2023.18685
Publikováno v:
Physical Review A. 103
Accurate measurements of optical line broadening and microwave hyperfine transition shifts are essential for optimizing the performance of buffer-gas atomic clocks. Previous literature has reported inconsistent measurement values. We report measureme
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a7e243e0332c45998b82aa7588bfce32
https://doi.org/10.1103/physreva.103.022826
https://doi.org/10.1103/physreva.103.022826
Autor:
David Guan, Xianli Zhang, Jonathan Tallant, Jay Noble, Nakri Dao, Hyunwook Park, K. Richard Overstreet
Publikováno v:
2020 Joint Conference of the IEEE International Frequency Control Symposium and International Symposium on Applications of Ferroelectrics (IFCS-ISAF).
Ion traps are a rugged, proven technology that supports high-performance and manufacturable time keeping solutions. Our approach to this implementation is based on the 12.6 GHz hyperfine transition of 171Yb+ ions confined in a linear Paul trap. We re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::98dd061f776ede3034fd52bf2bbc5b59
https://doi.org/10.1109/ifcs-isaf41089.2020.9234816
https://doi.org/10.1109/ifcs-isaf41089.2020.9234816
Autor:
Xianli Zhang, Will Krzewick, Matt Stanczyk, Peter Cash, Paul Machado, Dwayne Taylor, K. Richard Overstreet, Mike Silveira
Publikováno v:
2018 European Frequency and Time Forum (EFTF).
Microsemi's CSAC was developed from 2001 to 2011 and represented revolutionary technology for atomic clocks. The use of Coherent Population Trapping, pioneered at NIST, enabled a significant reduction in size, weight, and power compared to convention
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3a378127b1c5378626aeb0d652986b46
https://doi.org/10.1109/eftf.2018.8408999
https://doi.org/10.1109/eftf.2018.8408999
Autor:
S. R. Stein, C. Daniel Boschen, Dwayne Taylor, Jay Noble, K. Richard Overstreet, Michael Silveira, David R. Scherer, Jonathan Tallant
Publikováno v:
Proceedings of the 49th Annual Precise Time and Time Interval Systems and Applications Meeting.
We demonstrate an improvement in short-term stability by a factor of 10 over a previous generation miniature buffer gas cooled trapped ion clock. We describe the enhancement to detection SNR that has enabled this improvement, the method of clock oper
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c23275eb516fdaa1977c61a2a27cc8d3
https://doi.org/10.33012/2018.15609
https://doi.org/10.33012/2018.15609
Publikováno v:
Journal of Modern Optics. 54:2551-2562
We analyse bound states at long-range (R∼5 μm) for pairs of Cs atoms in the 89D and neighbouring states. These wells are due solely to avoided crossings between the van der Waals pair interaction potentials. The depth of the wells is ∼40 MHz, an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cdaeb97c1cd6510844678e1eb618644b
https://doi.org/10.1080/09500340701584076
https://doi.org/10.1080/09500340701584076
Publikováno v:
Physical Review A. 76
Experimental studies of a photoinitiated collision in an ultracold Cs Rydberg gas are presented. The process is characterized by measuring the laser intensity dependence of the absorption, the number of particles leaving each collision, and the recoi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::acc00ddb9873fdb680a8ac0175e41d7f
https://doi.org/10.1103/physreva.76.011403
https://doi.org/10.1103/physreva.76.011403
Publikováno v:
Applied optics. 46(8)
We report the implementation of a tunable, narrow-spectral-bandwidth, pulsed, four-pass dye-laser amplifier with strongly reduced amplified spontaneous emission. We present temporal pulse profiles, pulse spectra, and gain measurements of the amplifie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::302b166eccb9ad6798a818b2301982d3
https://pubmed.ncbi.nlm.nih.gov/17318251
https://pubmed.ncbi.nlm.nih.gov/17318251
Publikováno v:
Frontiers in Optics 2007/Laser Science XXIII/Organic Materials and Devices for Displays and Energy Conversion.
We present calculations of long range Cs Rydberg molecules. The molecules are formed by multipole interactions and can be controlled using an external electric field. Experimental progress on detecting these molecules will be reviewed.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1dda4cb777ec90b51f4b31a287666453
https://doi.org/10.1364/ls.2007.lwh5
https://doi.org/10.1364/ls.2007.lwh5
Publikováno v:
Physical Review A. 74
We present calculations of potential curves for very high-n (89D) Cs Rydberg-atom pairs, including a background electric field. From these potentials, we show that energy transfer occurs at rates of {approx}30-70 MHz, background electric fields play
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::980c63c77becc3337523e132b4232f4d
https://doi.org/10.1103/physreva.74.020701
https://doi.org/10.1103/physreva.74.020701