Patrick Cheinet
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View article: Splitting of the three-body Förster resonance in Rb Rydberg atoms as a measure of dipole-dipole interaction strength
Splitting of the three-body Förster resonance in Rb Rydberg atoms as a measure of dipole-dipole interaction strength Open
Three-body Förster resonances controlled by a dc electric field are of interest for the implementation of three-qubit quantum gates with single atoms in optical traps using their laser excitation into strongly interacting Rydberg states. I…
View article: Investigation of three-body Förster resonance for various spatial configurations of the three interacting Rubidium Rydberg atoms
Investigation of three-body Förster resonance for various spatial configurations of the three interacting Rubidium Rydberg atoms Open
Three-body Förster resonances controlled by a dc electric field are of interest for the implementation of three-qubit quantum gates with single atoms captured in optical traps and laser-excited into strongly interacting Rydberg states. In …
View article: Long-range <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>C</mml:mi><mml:mi>C</mml:mi><mml:mi mathvariant="normal">Φ</mml:mi></mml:mrow></mml:math> gates via radio-frequency-induced Förster resonances
Long-range gates via radio-frequency-induced Förster resonances Open
Registers of trapped neutral atoms, excited to Rydberg states to induce strong long-distance interactions, are extensively studied for direct applications in quantum computing. Here we present a CCΦ quantum phase gate protocol based on rad…
View article: Long-range $CCΦ$ gates via radio-frequency-induced Förster resonances
Long-range $CCΦ$ gates via radio-frequency-induced Förster resonances Open
Registers of trapped neutral atoms, excited to Rydberg states to induce strong long-distance interactions, are extensively studied for direct applications in quantum computing. Here, we present a novel $CCΦ$ quantum phase gate protocol bas…
View article: Control system for ion Penning traps at the AEgIS experiment at CERN
Control system for ion Penning traps at the AEgIS experiment at CERN Open
The AEgIS experiment located at the Antiproton Decelerator at CERN aims to measure the gravitational fall of a cold antihydrogen pulsed beam. The precise observation of the antiatoms in the Earth gravitational field requires a controlled p…
View article: Development of a detector for inertial sensing of positronium at AEḡIS (CERN)
Development of a detector for inertial sensing of positronium at AEḡIS (CERN) Open
The primary goal of the AEgIS collaboration at CERN is to measure the gravitational acceleration on neutral antimatter. Positronium (Ps), the bound state of an electron and a positron, is a suitable candidate for a force-sensitive inertial…
View article: High-resolution MCP-TimePix3 imaging/timing detector for antimatter physics
High-resolution MCP-TimePix3 imaging/timing detector for antimatter physics Open
We present a hybrid imaging/timing detector for force sensitive inertial measurements designed for measurements on positronium, the metastable bound state of an electron and a positron, but also suitable for applications involving other lo…
View article: Pulsed Production of Antihydrogen in AEgIS
Pulsed Production of Antihydrogen in AEgIS Open
Cold antihydrogen atoms are a powerful tool to probe the validity of fundamental physics laws, and it's clear that colder atoms, generally speaking, allow an increased level of precision. After the first production of cold antihydrogen (H …
View article: Coherent Light Shift on Alkaline-Earth Rydberg Atoms from Isolated Core Excitation without Autoionization
Coherent Light Shift on Alkaline-Earth Rydberg Atoms from Isolated Core Excitation without Autoionization Open
New experimental quantum simulation platforms have recently been implemented\nwith divalent atoms trapped in optical tweezer arrays with promising\nperformance. The second valence electron also brings new propects through the\nso-called Is…
View article: Experiments with mid-heavy antiprotonic atoms in AEgIS
Experiments with mid-heavy antiprotonic atoms in AEgIS Open
Antiprotonic atoms have been fundamental in experiments which provide the most precise data on the strong interaction between protons and antiprotons and of the neutron skin of many nuclei thanks to the clean annihilation signal. In most o…
View article: Toffoli gate based on a three-body fine-structure-state-changing Förster resonance in Rydberg atoms
Toffoli gate based on a three-body fine-structure-state-changing Förster resonance in Rydberg atoms Open
We have developed an improved scheme of a three-qubit Toffoli gate based on fine structure state changing three-body Stark-tuned Rydberg interaction. This scheme is a substantial improvement of our previous proposal [I.I.Beterov et al., Ph…
View article: Isolated core excitation of high-orbital-quantum-number Rydberg states of ytterbium
Isolated core excitation of high-orbital-quantum-number Rydberg states of ytterbium Open
We study isolated core excitation of ultra cold ytterbium Rydberg atoms of\nhigh orbital quantum number. Measurements were performed on the $6s_{1/2} 40l\n\\rightarrow 6p_{1/2} 40l $ transition with $l=5-9$. The extracted energy shifts\nan…
View article: Searching optimal conditions for quantum gates application with the new 3-body Förster resonances in Rb and Cs Rydberg atoms
Searching optimal conditions for quantum gates application with the new 3-body Förster resonances in Rb and Cs Rydberg atoms Open
Three body resonant interactions between Rydberg atoms are considered in order to perform few-body quantum gates. So far, the resonances found in cesium or rubidium atoms relied on an adjacent two-body resonance which ceases to exist for p…
View article: Protocol for pulsed antihydrogen production in the AEḡIS apparatus
Protocol for pulsed antihydrogen production in the AEḡIS apparatus Open
The AE ḡ IS collaboration’s main goal is to measure the acceleration of antihydrogen ( ) due to gravity. The experimental scheme is to form a pulsed beam whose vertical deflection is then measured by means of a moiré deflectometer [1]…
View article: Isolated core excitation of high orbital quantum number Rydberg states of ytterbium
Isolated core excitation of high orbital quantum number Rydberg states of ytterbium Open
We study isolated core excitation of ultra cold ytterbium Rydberg atoms of high orbital quantum number. Measurements were performed on the $6s_{1/2} 40l \rightarrow 6p_{1/2} 40l $ transition with $l=5-9$. The extracted energy shifts and au…
View article: Laser and microwave spectroscopy of even-parity Rydberg states of neutral ytterbium and multichannel-quantum-defect-theory analysis
Laser and microwave spectroscopy of even-parity Rydberg states of neutral ytterbium and multichannel-quantum-defect-theory analysis Open
New measurements of high-lying even parity $6sns\\, {}^1 \\! S_0$ and\n$6snd\\,{}^{3,1}\\!D_2$ levels of neutral $^{174}$Yb are presented in this paper.\nSpectroscopy is performed by a two-step laser excitation from the ground state\n$4f^{…
View article: Fast three-qubit Toffoli quantum gate based on three-body Förster resonances in Rydberg atoms
Fast three-qubit Toffoli quantum gate based on three-body Förster resonances in Rydberg atoms Open
We propose a scheme of fast three-qubit Toffoli quantum gate for ultracold neutral-atom qubits. The scheme is based on the Stark-tuned three-body F\"{o}rster resonances, which we have observed in our recent experiment [D.B.Tretyakov et al.…
View article: Fast three-qubit Toffoli quantum gate based on the three-body Förster resonances in Rydberg atoms
Fast three-qubit Toffoli quantum gate based on the three-body Förster resonances in Rydberg atoms Open
We propose a scheme of fast three-qubit Toffoli quantum gate for ultracold neutral-atom qubits. The scheme is based on the Stark-tuned three-body Förster resonances, which we have observed in our recent experiment [D.B.Tretyakov et al., Ph…
View article: Coherence of the Borromean three-body Förster resonances in Rydberg atoms
Coherence of the Borromean three-body Förster resonances in Rydberg atoms Open
We have observed recently the Stark-tuned three-body Förster resonances ${\rm 3}\times nP_{3/2} (|M|)\to nS_{1/2} +(n+1)S_{1/2} +nP_{3/2} (|M^{*} |)$ at long-range interactions of a few cold Rb Rydberg atoms [D.B.Tretyakov et al., Phys. Re…
View article: Coherent scattering of near-resonant light by a dense, microscopic cloud of cold two-level atoms: Experiment versus theory
Coherent scattering of near-resonant light by a dense, microscopic cloud of cold two-level atoms: Experiment versus theory Open
We measure the coherent scattering of low-intensity, near-resonant light by a\ncloud of laser-cooled two-level rubidium atoms with a size comparable to the\nwavelength of light. We isolate a two-level atomic structure by applying a 300G\nm…
View article: Laser and microwave spectroscopy of even-parity Rydberg states of neutral ytterbium and Multichannel Quantum Defect Theory analysis
Laser and microwave spectroscopy of even-parity Rydberg states of neutral ytterbium and Multichannel Quantum Defect Theory analysis Open
New measurements of high-lying even parity $6sns\, {}^1 \! S_0$ and $6snd\,{}^{3,1}\!D_2$ levels of neutral $^{174}$Yb are presented in this paper. Spectroscopy is performed by a two-step laser excitation from the ground state $4f^{14}6s^2…
View article: Coherent Scattering of Near-Resonant Light by a Dense, Microscopic Cloud of Cold Two-Level Atoms: Experiment versus Theory
Coherent Scattering of Near-Resonant Light by a Dense, Microscopic Cloud of Cold Two-Level Atoms: Experiment versus Theory Open
We measure the coherent scattering of low-intensity, near-resonant light by a cloud of laser-cooled two-level rubidium atoms with a size comparable to the wavelength of light. We isolate a two-level atomic structure by applying a 300G magn…
View article: A transportable cold atom inertial sensor for space applications
A transportable cold atom inertial sensor for space applications Open
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