Zobrazeno 1 - 10
of 65
pro vyhledávání: '"Daniele Nicolodi"'
Autor:
Jialiang Yu, Sebastian Häfner, Thomas Legero, Sofia Herbers, Daniele Nicolodi, Chun Yu Ma, Fritz Riehle, Uwe Sterr, Dhruv Kedar, John M. Robinson, Eric Oelker, Jun Ye
Publikováno v:
Physical Review X, Vol 13, Iss 4, p 041002 (2023)
Thermodynamically induced length fluctuations of high-reflectivity mirror coatings put a fundamental limit on sensitivity and stability of precision optical interferometers like gravitational-wave detectors and ultrastable lasers. The main contributi
Externí odkaz:
https://doaj.org/article/13d900125e514b71ac2ed52c83c3bb98
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:
Uwe Sterr, Fritz Riehle, Daniele Nicolodi, Thomas Legero, Jialiang Yu, Jun Ye, John Robinson, William Milner, Eric Oelker, Dhruv Kedar, Alexander Staron
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e62b0ac653a873abd92a9cd108b78145
https://doi.org/10.26226/m.6275705f66d5dcf63a311750
https://doi.org/10.26226/m.6275705f66d5dcf63a311750
Autor:
Andrew D. Ludlow, K. Beloy, Xiaogang Zhang, Gianmaria Milani, R. J. Fasano, Tai Hyun Yoon, Stefan A. Schäffer, Marco Schioppo, W. F. McGrew, Daniele Nicolodi, N. Hinkley, Roger C. Brown
Publikováno v:
Nature. 564:87-90
The passage of time is tracked by counting oscillations of a frequency reference, such as Earth's revolutions or swings of a pendulum. By referencing atomic transitions, frequency (and thus time) can be measured more precisely than any other physical
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
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:
Andrew D. Ludlow, Xiaogang Zhang, K. Beloy, R. J. Fasano, W. F. McGrew, Roger C. Brown, Daniele Nicolodi, Youssef S. Hassan
We develop a model to describe the motional (i.e., external degree of freedom) energy spectra of atoms trapped in a one-dimensional optical lattice, taking into account both axial and radial confinement relative to the lattice axis. Our model respect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bbf3548785e50ec686ac1c525e9bb6de
http://arxiv.org/abs/2004.06224
http://arxiv.org/abs/2004.06224
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
Autor:
John Robinson, Tara M. Fortier, Tobias Bothwell, W. F. McGrew, Scott A. Diddams, Dhruv Kedar, Daniele Nicolodi, Youssef S. Hassan, Jian Yao, Jeff Sherman, Amanda Koepke, Thomas E. Parker, May E. Kim, Jun Ye, Andrew D. Ludlow, Eric Oelker, Jwo-Sy Chen, D. H. Hume, Martha I. Bodine, Nathan R. Newbury, R. J. Fasano, William C. Swann, Xiaogang Zhang, K. Beloy, Lindsay Sonderhouse, Isaac H. Khader, David R. Leibrandt, Holly Leopardi, William R. Milner, David J. Wineland, Laura C. Sinclair, Jean-Daniel Deschenes, Colin Kennedy, Stefan A. Schäffer, Sarah L. Bromley, Nicholas Nardelli, Samuel M. Brewer, Ethan Clements
Publikováno v:
Web of Science
We demonstrate optical frequency comparison of the 171Yb, 27Al+ and 87Sr atomic clocks with measurement uncertainties below 1 part in 1017, and discuss how phase-coherent and synchronous clock comparisons can be used to improve measurement stability.