Y
Y. Le Coq
Researcher at University of Paris
Publications - 75
Citations - 3005
Y. Le Coq is an academic researcher from University of Paris. The author has contributed to research in topics: Laser & Atomic clock. The author has an hindex of 25, co-authored 72 publications receiving 2804 citations. Previous affiliations of Y. Le Coq include National Institute of Standards and Technology & Pierre-and-Marie-Curie University.
Papers
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Journal ArticleDOI
Sr lattice clock at 1 x 10(-16) fractional uncertainty by remote optical evaluation with a Ca clock.
Andrew D. Ludlow,Tanya Zelevinsky,Gretchen K. Campbell,Sebastian Blatt,Martin M. Boyd,M. H. G. de Miranda,Michael J. Martin,Jan W. Thomsen,Seth M. Foreman,Jun Ye,Tara M. Fortier,Jason Stalnaker,Scott A. Diddams,Y. Le Coq,Z. W. Barber,Nicola Poli,Nathan D. Lemke,Kristin M. Beck,Christopher W. Oates +18 more
TL;DR: A high-performance remote comparison of optical clocks over kilometer-scale urban distances is realized and the uncertainty of a strontium (Sr) optical lattice clock at the 1 × 10–16 fractional level is evaluated, surpassing the current best evaluations of cesium (Cs) primary standards.
Journal ArticleDOI
Experimental realization of an optical second with strontium lattice clocks.
R. Le Targat,Luca Lorini,Y. Le Coq,Michal Zawada,J. Guéna,Michel Abgrall,Mikhail Gurov,Peter Rosenbusch,D. Rovera,B. Nagorny,R. Gartman,Philip G. Westergaard,Michael E. Tobar,M. Lours,Giorgio Santarelli,André Clairon,S. Bize,P. Laurent,Pierre Lemonde,Jérôme Lodewyck +19 more
TL;DR: An important step in the direction of a possible new definition of the second is presented, and two state-of-the-art strontium optical lattice clocks are proven to agree within their accuracy budget, with a total uncertainty of 1.5 × 10(-16).
Journal ArticleDOI
Ultrastable lasers based on vibration insensitive cavities
J. Millo,Daniel Varela Magalhães,C. Mandache,Y. Le Coq,E. M. L. English,Philip G. Westergaard,Jérôme Lodewyck,Sébastien Bize,Pierre Lemonde,Giorgio Santarelli +9 more
TL;DR: In this paper, the authors presented two ultrastable lasers based on two vibration insensitive cavity designs, one with vertical optical axis geometry, the other horizontal, which are constructed with fused silica mirror substrates, shown to decrease the thermal noise limit, in order to improve the frequency stability.
Journal ArticleDOI
Ultralow noise microwave generation with fiber-based optical frequency comb and application to atomic fountain clock
J. Millo,Michel Abgrall,M. Lours,E. M. L. English,Haifeng Jiang,J. Guéna,André Clairon,Michael E. Tobar,Sébastien Bize,Y. Le Coq,Giorgio Santarelli +10 more
TL;DR: In this article, the authors demonstrate the use of a fiber-based femtosecond laser locked onto an ultrastable optical cavity to generate a low-noise microwave reference signal.
Journal ArticleDOI
Optical-fiber pulse rate multiplier for ultralow phase-noise signal generation
TL;DR: An all optical-fiber approach to the synthesis of ultralow-noise microwave signals by photodetection of femtosecond laser pulses by using a cascade of Mach-Zehnder fiber interferometers to realize stable and efficient repetition rate multiplication.