The Experts below are selected from a list of 3948 Experts worldwide ranked by ideXlab platform
Malo Cadoret - One of the best experts on this subject based on the ideXlab platform.
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multi line fiber laser system for cesium and Rubidium Atom interferometry
Optics Express, 2017Co-Authors: Clement Diboune, Nassim Zahzam, Yannick Bidel, Malo Cadoret, Alexandre BressonAbstract:We present an innovative multi-line fiber laser system for both cesium and Rubidium manipulation. The architecture is based on frequency conversion of two lasers at 1560 nm and 1878 nm. By taking advantage of existing high performance fibered components at these wavelengths, we have demonstrated multi-line operation of an all fiber laser system delivering 350 mW at 780 nm for Rubidium and 210 mW at 852 nm for cesium. This result highlights the promising nature of such laser system especially for Cs manipulation for which no fiber laser system has been reported. It offers new perspectives for the development of Atomic instruments dedicated to onboard applications and opens the way to a new generation of Atom interferometers involving three Atomic species (85Rb, 87Rb and 133Cs) for which we propose an original laser architecture.
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fiber laser system for cesium and Rubidium Atom interferometry
arXiv: Atomic Physics, 2016Co-Authors: Clement Diboune, Nassim Zahzam, Yannick Bidel, Malo Cadoret, Alexandre BressonAbstract:We present an innovative fiber laser system for both cesium and Rubidium manipulation. The architecture is based on frequency conversion of two lasers at 1560 nm and 1878 nm. By taking advantage of existing fiber components at these wavelengths, we demonstrate an all fiber laser system delivering 350 mW at 780 nm for Rubidium and 210 mW at 852 nm for cesium. This result highlights the promising nature of such laser system especially for Cs manipulation for which no fiber laser system has been reported. It offers new perspectives for the development of Atomic instruments dedicated to onboard applications and opens the way to a new generation of Atom interferometers involving three Atomic species $^{85}$Rb, $^{87}$Rb and $^{133}$Cs for which we propose an original laser architecture.
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Compact and robust laser system for precision Atom interferometry based on a frequency doubled telecom fiber bench
CLEO: 2015, 2015Co-Authors: Félicie Theron, Nassim Zahzam, Yannick Bidel, Malo Cadoret, Alexandre BressonAbstract:We present a compact and robust narrow linewidth laser system for onboard Rubidium Atom interferometry using only one laser source based on a frequency doubled telecom fiber bench.
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Measurement of the ratio h/mRb and determination of the fine structure constant
Comptes Rendus Physique, 2011Co-Authors: Malo Cadoret, Estefania De Mirandes, Pierre Cladé, Saïda Guellati-khélifa, François Nez, François BirabenAbstract:We present a review of the most precise determinations of the fine structure constant α which are obtained in different domains of physics. We describe the measurement of the ratio h/mRb between the Planck constant and the mass of Rubidium Atom which leads to a precise value of α which is very few dependent of the QED. Finally, we present a review of the different determinations of the von Klitzing constant RK.
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compact and robust laser system for onboard Atom interferometry
Applied Physics B, 2009Co-Authors: O. Carraz, Renee Charriere, F Lienhart, Nassim Zahzam, Yannick Bidel, Malo Cadoret, Alexandre BressonAbstract:We propose a compact and robust laser system at 780 nm for onboard Atomic inertial sensors based on Rubidium Atom interferometry. The principle of this system consists in doubling the frequency of a telecom fiber bench at 1560 nm. The same laser source is used to achieve a magneto-optical trap, matter–wave interferences, and the Atomic detection. An Atomic gravimeter has been realized and the laser system has been validated under hyper- and microgravity.
François Biraben - One of the best experts on this subject based on the ideXlab platform.
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State of the art in the determination of the fine structure constant: test of Quantum Electrodynamics and determination of h/mu
annalen der adp physik, 2013Co-Authors: Rym Bouchendira, Pierre Cladé, Saïda Guellati-khélifa, François Nez, François BirabenAbstract:The fine structure constant $\alpha$ has a particular status in physics. Its precise determination is required to test the quantum electrodynamics (QED) theory. The constant $\alpha$ is also a keystone for the determination of other fundamental physical constants, especially the ones involved in the framework of the future International System of units. This paper presents Paris experiment, where the fine structure constant is determined by measuring the recoil velocity of a Rubidium Atom when it absorbs a photon. The impact of the recent improvement of QED calculations of the electron moment anomaly and the recent measurement of the cesium Atom recoil at Berkeley will be discussed. The opportunity to provide a precise value of the ratio $h/m_{\mathrm{u}}$ between the Planck constant and the Atomic mass constant will be investigated.
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Measurement of the ratio h/mRb and determination of the fine structure constant
Comptes Rendus Physique, 2011Co-Authors: Malo Cadoret, Estefania De Mirandes, Pierre Cladé, Saïda Guellati-khélifa, François Nez, François BirabenAbstract:We present a review of the most precise determinations of the fine structure constant α which are obtained in different domains of physics. We describe the measurement of the ratio h/mRb between the Planck constant and the mass of Rubidium Atom which leads to a precise value of α which is very few dependent of the QED. Finally, we present a review of the different determinations of the von Klitzing constant RK.
Alexandre Bresson - One of the best experts on this subject based on the ideXlab platform.
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multi line fiber laser system for cesium and Rubidium Atom interferometry
Optics Express, 2017Co-Authors: Clement Diboune, Nassim Zahzam, Yannick Bidel, Malo Cadoret, Alexandre BressonAbstract:We present an innovative multi-line fiber laser system for both cesium and Rubidium manipulation. The architecture is based on frequency conversion of two lasers at 1560 nm and 1878 nm. By taking advantage of existing high performance fibered components at these wavelengths, we have demonstrated multi-line operation of an all fiber laser system delivering 350 mW at 780 nm for Rubidium and 210 mW at 852 nm for cesium. This result highlights the promising nature of such laser system especially for Cs manipulation for which no fiber laser system has been reported. It offers new perspectives for the development of Atomic instruments dedicated to onboard applications and opens the way to a new generation of Atom interferometers involving three Atomic species (85Rb, 87Rb and 133Cs) for which we propose an original laser architecture.
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fiber laser system for cesium and Rubidium Atom interferometry
arXiv: Atomic Physics, 2016Co-Authors: Clement Diboune, Nassim Zahzam, Yannick Bidel, Malo Cadoret, Alexandre BressonAbstract:We present an innovative fiber laser system for both cesium and Rubidium manipulation. The architecture is based on frequency conversion of two lasers at 1560 nm and 1878 nm. By taking advantage of existing fiber components at these wavelengths, we demonstrate an all fiber laser system delivering 350 mW at 780 nm for Rubidium and 210 mW at 852 nm for cesium. This result highlights the promising nature of such laser system especially for Cs manipulation for which no fiber laser system has been reported. It offers new perspectives for the development of Atomic instruments dedicated to onboard applications and opens the way to a new generation of Atom interferometers involving three Atomic species $^{85}$Rb, $^{87}$Rb and $^{133}$Cs for which we propose an original laser architecture.
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Compact and robust laser system for precision Atom interferometry based on a frequency doubled telecom fiber bench
CLEO: 2015, 2015Co-Authors: Félicie Theron, Nassim Zahzam, Yannick Bidel, Malo Cadoret, Alexandre BressonAbstract:We present a compact and robust narrow linewidth laser system for onboard Rubidium Atom interferometry using only one laser source based on a frequency doubled telecom fiber bench.
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compact and robust laser system for onboard Atom interferometry
Applied Physics B, 2009Co-Authors: O. Carraz, Renee Charriere, F Lienhart, Nassim Zahzam, Yannick Bidel, Malo Cadoret, Alexandre BressonAbstract:We propose a compact and robust laser system at 780 nm for onboard Atomic inertial sensors based on Rubidium Atom interferometry. The principle of this system consists in doubling the frequency of a telecom fiber bench at 1560 nm. The same laser source is used to achieve a magneto-optical trap, matter–wave interferences, and the Atomic detection. An Atomic gravimeter has been realized and the laser system has been validated under hyper- and microgravity.
E Brion - One of the best experts on this subject based on the ideXlab platform.
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spontaneous emission and energy shifts of a rydberg Rubidium Atom close to an optical nanofiber
Physical Review A, 2020Co-Authors: E Stourm, Maxence Lepers, J Robert, Nic S Chormaic, Klaus Molmer, E BrionAbstract:In this paper, we report on numerical calculations of the spontaneous emission rates and Lamb shifts of a $^{87}\text{Rb}$ Atom in a Rydberg-excited state $\left(n\leq30\right)$ located close to a silica optical nanofiber. We investigate how these quantities depend on the fiber's radius, the distance of the Atom to the fiber, the direction of the Atomic angular momentum polarization as well as the different Atomic quantum numbers. We also study the contribution of quadrupolar transitions, which may be substantial for highly polarizable Rydberg states. Our calculations are performed in the macroscopic quantum electrodynamics formalism, based on the dyadic Green's function method. This allows us to take dispersive and absorptive characteristics of silica into account; this is of major importance since Rydberg Atoms emit along many different transitions whose frequencies cover a wide range of the electromagnetic spectrum. Our work is an important initial step towards building a Rydberg Atom-nanofiber interface for quantum optics and quantum information purposes.
Antoine Browaeys - One of the best experts on this subject based on the ideXlab platform.
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coherent excitation of a single Atom to a rydberg state
Physical Review A, 2010Co-Authors: Yevhen Miroshnychenko, Tatjana Wilk, Alpha Gaetan, Charles Evellin, Pierre Pillet, Philippe Grangier, Daniel Comparat, Antoine BrowaeysAbstract:We present the coherent excitation of a single Rubidium Atom to the Rydberg state 58d{sub 3/2} using a two-photon transition. The experimental setup is described in detail, as are experimental techniques and procedures. The coherence of the excitation is revealed by observing Rabi oscillations between ground and Rydberg states of the Atom. We analyze the observed oscillations in detail and compare them to numerical simulations which include imperfections of our experimental system. Strategies for future improvements on the coherent manipulation of a single Atom in our settings are given.
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controlled photon emission and raman transition experiments with a single trapped Atom
arXiv: Quantum Physics, 2005Co-Authors: Matthew Jones, J Dingjan, Yvan R P Sortais, Jérôme Beugnon, Stefania Bergamini, Gaetan Messin, Benoit Darquie, Antoine Browaeys, Philippe GrangierAbstract:We present recent results on the coherent control of an optical transition in a single Rubidium Atom, trapped in an optical tweezer. We excite the Atom using resonant light pulses that are short (4 ns) compared with the lifetime of the excited state (26 ns). By varying the intensity of the laser pulses, we can observe an adjustable number of Rabi oscillations, followed by free decay once the light is switched off. To generate the pulses we have developed a novel laser system based on frequency doubling a telecoms laser diode at 1560 nm. By setting the laser intensity to make a pi-pulse, we use this coherent control to make a high quality triggered source of single photons. We obtain an average single photon rate of 9600 s-1 at the detector. Measurements of the second-order temporal correlation function show almost perfect antibunching at zero delay. In addition, we present preliminary results on the use of Raman transitions to couple the two hyperfine levels of the ground state of our trapped Atom. This will allow us to prepare and control a qubit formed by two hyperfine sub-levels.
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controlled single photon emission from a single trapped two level Atom
Science, 2005Co-Authors: Benoit Darquie, J Dingjan, Yvan R P Sortais, Jérôme Beugnon, Stefania Bergamini, Gaetan Messin, Antoine Browaeys, Matthew Jones, Philippe GrangierAbstract:By illuminating an individual Rubidium Atom stored in a tight optical tweezer with short resonant light pulses, we created an efficient triggered source of single photons with a well-defined polarization. The measured intensity correlation of the emitted light pulses exhibits almost perfect antibunching. Such a source of high-rate, fully controlled single-photon pulses has many potential applications for quantum information processing.
