Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Holly Leopardi"'
Autor:
Ronakraj K. Gosalia, Ryan Aguinaldo, Jonathan Green, Holly Leopardi, Peter Brereton, Robert Malaney
Publikováno v:
APL Photonics, Vol 9, Iss 10, Pp 100903-100903-22 (2024)
The next generation of space-based networks for communications, sensing, and navigation will contain optical clocks embedded within satellites. To fully realize the capabilities of such clocks, high-precision clock synchronization across the networks
Externí odkaz:
https://doaj.org/article/ef429dbf433b4a8fb63fc85be9f3f5a3
Autor:
Martha I. Bodine, Jean-Daniel Deschênes, Isaac H. Khader, William C. Swann, Holly Leopardi, Kyle Beloy, Tobias Bothwell, Samuel M. Brewer, Sarah L. Bromley, Jwo-Sy Chen, Scott A. Diddams, Robert J. Fasano, Tara M. Fortier, Youssef S. Hassan, David B. Hume, Dhruv Kedar, Colin J. Kennedy, Amanda Koepke, David R. Leibrandt, Andrew D. Ludlow, William F. McGrew, William R. Milner, Daniele Nicolodi, Eric Oelker, Thomas E. Parker, John M. Robinson, Stefania Romish, Stefan A. Schäffer, Jeffrey A. Sherman, Lindsay Sonderhouse, Jian Yao, Jun Ye, Xiaogang Zhang, Nathan R. Newbury, Laura C. Sinclair
Publikováno v:
Physical Review Research, Vol 2, Iss 3, p 033395 (2020)
We use frequency-comb-based optical two-way time-frequency transfer (O-TWTFT) to measure the optical frequency ratio of state-of-the-art ytterbium and strontium optical atomic clocks separated by a 1.5-km open-air link. Our free-space measurement is
Externí odkaz:
https://doaj.org/article/73e8b65a1e2d4fd4b5b0a1350a920fb7
Autor:
May E. Kim, William F. McGrew, Nicholas V. Nardelli, Ethan R. Clements, Youssef S. Hassan, Xiaogang Zhang, Jose L. Valencia, Holly Leopardi, David B. Hume, Tara M. Fortier, Andrew D. Ludlow, David R. Leibrandt
Publikováno v:
Nature Physics. 19:25-29
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4e6beac839e06537cada6a48bcd3672d
https://doi.org/10.1038/s41567-022-01794-7
https://doi.org/10.1038/s41567-022-01794-7
Publikováno v:
Quantum Sensing, Imaging, and Precision Metrology.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4d28a87858dd8295733b1c8174108874
https://doi.org/10.1117/12.2657696
https://doi.org/10.1117/12.2657696
Publikováno v:
Laser & Photonics Reviews. 17
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0275317f820453e3cd5e5135fe3db87d
https://doi.org/10.1002/lpor.202200650
https://doi.org/10.1002/lpor.202200650
Autor:
Scott A. Diddams, Zachary L. Newman, Holly Leopardi, Matthew T. Hummon, Tara M. Fortier, John Kitching, Leo W. Hollberg, Vincent Maurice, Connor Fredrick
We describe a high-performance, compact optical frequency standard based on a microfabricated Rb vapor cell and a low-noise, external cavity diode laser operating on the Rb two-photon transition at 778 nm. The optical standard achieves an instability
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a64ef8448567cf0f8894d498cdf6e40
http://arxiv.org/abs/2105.00610
http://arxiv.org/abs/2105.00610
Autor:
Youssef S. Hassan, Takuma Nakamura, Joe C. Campbell, Franklyn Quinlan, Josue Davila-Rodriguez, K. Beloy, Holly Leopardi, Tara M. Fortier, W. F. McGrew, Scott A. Diddams, Daniele Nicolodi, Andrew D. Ludlow, Xiaojun Xie, Xiaogang Zhang, Jeff Sherman
Publikováno v:
2020 IEEE Photonics Conference (IPC).
Microwaves with 1×10-18 absolute instability were derived from two independent Yb optical clocks. The optical clock phase is reproduced at 10 GHz with 1×10-19 fidelity, demonstrating that state-of-the-art optical clock uncertainty and instability c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::58a509588e0577981a4f7c9046fcdcbc
https://doi.org/10.1109/ipc47351.2020.9252382
https://doi.org/10.1109/ipc47351.2020.9252382
Autor:
Colin Kennedy, W. F. McGrew, Stefan A. Schäffer, John Robinson, Nathan R. Newbury, Jean-Daniel Deschênes, Xiaogang Zhang, Sarah L. Bromley, Isaac H. Khader, Samuel M. Brewer, Jun Ye, Jeff Sherman, William C. Swann, Amanda Koepke, Jwo-Sy Chen, Thomas E. Parker, David R. Leibrandt, Laura C. Sinclair, R. J. Fasano, Dhruv Kedar, Eric Oelker, David Hume, Tara M. Fortier, Andrew D. Ludlow, Tobias Bothwell, Jian Yao, Stefania Romish, Kyle Beloy, Holly Leopardi, Youssef S. Hassan, William R. Milner, Scott A. Diddams, Daniele Nicolodi, Martha I. Bodine, Lindsay Sonderhouse
We use frequency comb-based optical two-way time-frequency transfer (O-TWTFT) to measure the optical frequency ratio of state-of-the-art ytterbium and strontium optical atomic clocks separated by a 1.5 km open-air link. Our free-space measurement is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7fda73d16dd5a261aa830d358bb17381
http://arxiv.org/abs/2006.01306
http://arxiv.org/abs/2006.01306
Autor:
Scott A. Diddams, Daniele Nicolodi, Franklyn Quinlan, Tara M. Fortier, Josue Davila-Rodriguez, Jeff Sherman, Joe C. Campbell, Kyle Beloy, Xiaogang Zhang, Xiaojun Xie, Youssef S. Hassan, Takuma Nakamura, W. F. McGrew, Andrew D. Ludlow, Holly Leopardi
Optical atomic clocks are poised to redefine the SI second, thanks to stability and accuracy more than one hundred times better than the current microwave atomic clock standard. However, the best optical clocks have not seen their performance transfe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bb8f8e369c3b702eed4de939284c01da
http://arxiv.org/abs/2003.02923
http://arxiv.org/abs/2003.02923
Autor:
Takuma, Nakamura, Josue, Davila-Rodriguez, Holly, Leopardi, Jeff A, Sherman, Tara M, Fortier, Xiaojun, Xie, Joe C, Campbell, William F, McGrew, Xiaogang, Zhang, Youssef S, Hassan, Daniele, Nicolodi, Kyle, Beloy, Andrew D, Ludlow, Scott A, Diddams, Franklyn, Quinlan
Publikováno v:
Science (New York, N.Y.). 368(6493)
Optical atomic clocks are poised to redefine the Système International (SI) second, thanks to stability and accuracy more than 100 times better than the current microwave atomic clock standard. However, the best optical clocks have not seen their pe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::a82c55d2c9aa68bb1abd509cc9e61c82
https://pubmed.ncbi.nlm.nih.gov/32439780
https://pubmed.ncbi.nlm.nih.gov/32439780