An ultra-stable referenced interrogation system in the deep ultraviolet for a mercury optical lattice clock

Autor: R. Chicireanu, S. T. Dawkins, Jacques Millo, Sébastien Bize, C. Mandache, Michael Petersen, Y. Le Coq, Daniel Varela Magalhães

Publikováno v: Applied Physics B-Laser and Optics
Applied Physics B-Laser and Optics, 2010, 99, pp.41-46. ⟨10.1007/s00340-009-3830-3⟩
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

We have developed an ultra-stable source in the deep ultraviolet, suitable to fulfill the interrogation requirements of a future fully-operational lattice clock based on neutral mercury. At the core of the system is a Fabry-P\'erot cavity which is hi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7dd3a1a8ecb11cec66f2ab4f5f914027
https://doi.org/10.1007/s00340-009-3830-3

Trapping metastable chromium atoms in a crossed optical dipole trap

Autor: L. Vernac, A. Pouderous, O. Gorceix, Bruno Laburthe-Tolra, E. Maréchal, R. Chicireanu, Q. Beaufils, J.-C. Keller

Publikováno v: Annales de Physique. 32:171-173

We report the fast accumulation of up to 1 million 52 Cr metastable atoms in a mixed trap formed by the superposition of a quadrupolar magnetic trap and a strongly confining optical trap. The cloud is at a temperature of 100 μK with a peak density o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::df85eaa39b0b8bd164ab18653c8e982e
https://doi.org/10.1051/anphys:2008035

Randomized benchmarking of atomic qubits in an optical lattice

Autor: R. Chicireanu, Steven Olmschenk, K. D. Nelson, James V. Porto

Publikováno v: New Journal of Physics
New Journal of Physics, Institute of Physics: Open Access Journals, 2010, 12 (11), pp.113007. ⟨10.1088/1367-2630/12/11/113007⟩

We perform randomized benchmarking on neutral atomic quantum bits (qubits) confined in an optical lattice. Single qubit gates are implemented using microwaves, resulting in a measured error per randomized computational gate of 1.4(1) x 10^-4 that is

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8ce23ece4dff475c3f7788d55690ef5e
https://hal.archives-ouvertes.fr/hal-02352598

LNE-SYRTE CLOCK ENSEMBLE: NEW 87Rb HYPERFINE FREQUENCY MEASUREMENT - SPECTROSCOPY OF 199Hg AND 201Hg OPTICAL CLOCK TRANSITION

Autor: F. Chapelet, P. Laurent, Giorgio Santarelli, Y. Lecoq, S. T. Dawkins, André Clairon, J. Guéna, C. Mandache, Michael Petersen, G. D. Rovera, Daniel Varela Magalhães, J. Millo, M. Abgrall, Peter Rosenbusch, Michael E. Tobar, R. Chicireanu, Sébastien Bize

Publikováno v: Frequency Standards and Metrology.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::56d70a391a5fda0fc45a71e06f1f4506
https://doi.org/10.1142/9789812838223_0008

Radio-frequency-induced ground-state degeneracy in a Bose-Einstein condensate of chromium atoms

Autor: T. Zanon, Q. Beaufils, L. Vernac, J.-C. Keller, O. Gorceix, R. Chicireanu, Bruno Laburthe-Tolra, E. Maréchal

Publikováno v: Physical Review A. 78

We study the effect of strong radio-frequency (rf) fields on a Bose-Einstein condensate (BEC) of chromium atoms, in a regime where the rf frequency is much larger than the Larmor frequency. We use the modification of the Land\'e factor by the rf fiel

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5e4d17f6fed7c99ca4ed469f979c3b46
https://doi.org/10.1103/physreva.78.051603