F
F. Ramirez-Martinez
Researcher at National Autonomous University of Mexico
Publications - 30
Citations - 567
F. Ramirez-Martinez is an academic researcher from National Autonomous University of Mexico. The author has contributed to research in topics: Rubidium & Dipole. The author has an hindex of 11, co-authored 27 publications receiving 528 citations. Previous affiliations of F. Ramirez-Martinez include Centre national de la recherche scientifique & Imperial College London.
Papers
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Journal ArticleDOI
Spin self-rephasing and very long coherence times in a trapped atomic ensemble.
Christian Deutsch,F. Ramirez-Martinez,Clément Lacroûte,Friedemann Reinhard,T. Schneider,Jean-Noël Fuchs,F. Piéchon,Franck Laloë,Jakob Reichel,Peter Rosenbusch +9 more
TL;DR: A spin self-rephasing mechanism induced by the identical spin rotation effect originating from the exchange interaction is proposed and good agreement with the experimental observations is obtained.
Journal ArticleDOI
Pyramidal micromirrors for microsystems and atom chips
Michael Trupke,F. Ramirez-Martinez,E. A. Curtis,J. P. Ashmore,Stefan Eriksson,E. A. Hinds,Zakaria Moktadir,Carsten O. Gollasch,Michael Kraft,G. Vijaya Prakash,Jeremy J. Baumberg +10 more
TL;DR: Concave pyramids are created in the (100) surface of a silicon wafer by anisotropic etching in potassium hydroxide as discussed by the authors, and high quality micromirrors are then formed by sputtering gold onto the smooth silicon (111) faces of the pyramid.
Journal ArticleDOI
Extended coherence time on the clock transition of optically trapped rubidium.
G. Kleine Büning,J. Will,Wolfgang Ertmer,Ernst M. Rasel,Jan J. Arlt,Carsten Klempt,F. Ramirez-Martinez,F. Piéchon,Peter Rosenbusch +8 more
TL;DR: A drastic increase of the coherence time to 21 s on the magnetic field insensitive clock transition of (87)Rb is demonstrated by applying the recently discovered spin self-rephasing, confirming the general nature of this new mechanism and showing its applicability in atom clocks and quantum memories.
Journal ArticleDOI
Characteristics of integrated magneto-optical traps for atom chips
S. Pollock,J. P. Cotter,Athanasios Laliotis,Athanasios Laliotis,F. Ramirez-Martinez,F. Ramirez-Martinez,E. A. Hinds +6 more
TL;DR: In this article, the authors investigated the operation of pyramidal magneto-optical traps (MOTs) microfabricated in silicon and found that the number of 85Rb atoms trapped in the pyramid is approximately L6, where L6 is the size of the pyramid opening in mm.
Journal ArticleDOI
Pyramidal micro-mirrors for microsystems and atom chips
Michael Trupke,F. Ramirez-Martinez,E. A. Curtis,J. P. Ashmore,Stefan Eriksson,E. A. Hinds,Zakaria Moktadir,Carsten O. Gollasch,Michael Kraft,G. Vijaya Prakash,J. J. Baumberg +10 more
TL;DR: In this article, a pyramid of concave pyramids is created in the (100) surface of a silicon wafer by anisotropic etching in potassium hydroxide and high quality micro-mirrors are then formed by sputtering gold onto the smooth silicon (111) faces of the pyramid.