Atom Interferometer Driven by a Picosecond Frequency Comb

Solaro, Cyrille; Debavelaere, Clément; Cladé, Pierre; Guellati-Khélifa, Saïda

doi:10.1103/physrevlett.129.173204

Cited by 8 publications

(5 citation statements)

References 27 publications

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“…To drive Raman transitions with a FC and thus to perform atom interferometry, we need two counter propagating pulses overlapping on the atomic cloud. The full apparatus of the experiment is described in [4]. This condition impose a pulse duration on the order of the picosecond so that every atom in the atomic cloud * e-mail: clement.debavelaere@lkb.ens.fr perform the transition.…”

Section: Counter Propagating Raman Transition and Atom Interferometrymentioning

confidence: 99%

Frequency comb atom interferometry

Debavelaere,

Solaro,

Cladé

et al. 2023

EPJ Web Conf.

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We have implemented of a light pulse atom interferometer based on the diffraction of free-falling atoms of Rubidium by a picosecond frequency-comb laser. We have studied the impact of the pulses’ length as well as of the interrogation time on the contrast of the fringes. Our data are well reproduce by a theoretical model based on the effective coupling which depend on the overlap between the pulses and the atoms. This technique, which we demonstrated in the visible spectrum on Rb atoms, paves the way for extending light-pulse interferometry to other spectral regions (deep-UV to X-UV) and therefore to new species, since one can benefit from the high peak intensity of the ultrashort pulses which makes nonlinear frequency conversion in crystals and gas targets more efficient.

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Section: Counter Propagating Raman Transition and Atom Interferometrymentioning

confidence: 99%

Frequency comb atom interferometry

Debavelaere,

Solaro,

Cladé

et al. 2023

EPJ Web Conf.

Self Cite

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“…This kind of experiments can often take advantage of the accuracy of interferometry to measure gravitational effects. Solutions based on different types of interferometry have been proposed, also for antimatter [26]. Some of these rely on Ps excitation to high-order Rydberg states to increase its lifetime [27,28].…”

Section: Introductionmentioning

confidence: 99%

A large-momentum-transfer matter-wave interferometer to measure the effect of gravity on positronium

Vinelli,

Castelli,

Ferragut

et al. 2023

Class. Quantum Grav.

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This paper reports the study of a new interferometric configuration to measure the effect of gravity on positronium. A Mach–Zehnder matter-wave interferometer has been designed to operate with single-photon transitions and to transfer high momentum to a 200 eV positronium beam. The work shows the results and methods used to simulate the interferometer and estimate the operating parameters and the time needed to perform the experiment. It has been estimated that within less than 1 year, the acquisition time is sufficient to achieve a 10% accuracy level in measuring positronium gravitational acceleration, even with a poorly collimated beam, which is significant for theoretical models describing matter–antimatter symmetry. These results pave the way for single photon transition large momentum transfer interferometry with fast atomic beams, which is particularly useful for studies with antimatter and unstable atoms.

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“…In the development cycles and also after the achievement of the first Bose-Einstein condensates in the laboratory [10], this new form of matter with the characteristics of long-range coherence in time and space has soon been associated with the scenario of coherent laser sources [11]. Follow-up experiments on interfering Bose-Einstein condensates have proven the ability of (atom-wise) constructive and destructive interference of ultra-cold coherent atomic vapors [12][13][14], similar to the comb spectrum of coherent laser beams.…”

Section: Introductionmentioning

confidence: 99%

Monte Carlo Simulation for the Frequency Comb Spectrum of an Atom Laser

Schelle

2023

Quanta

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A theoretical particle-number conserving quantum field theory based on the concept of imaginary time is presented and applied to the scenario of a coherent atomic laser field at ultra-cold temperatures. The proposed theoretical model describes the analytical derivation of the frequency comb spectrum for an atomic laser realized from modeling a coherent atomic beam of condensate and non-condensate quantum field components released from a trapped Bose–Einstein condensate at a given repetition phase and frequency. The condensate part of the atomic vapor is assumed to be subjected to thermal noise induced by the temperature of the surrounding thermal atomic cloud. This new quantum approach uses time periodicity and an orthogonal decomposition of the quantum field in a complex-valued quantum field representation to derive and model the quantum field's forward- and backward-propagating components as a standing wave field in the same unique time and temperature domain without quantitative singularities at finite temperatures. The complex-valued atom laser field, the resulting frequency comb, and the repetition frequency distribution with the varying shape of envelopes are numerically monitored within a Monte Carlo sampling method, as a function of temperature and trap frequency of the external confinement.Quanta 2023; 12: 171–179.

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Atom Interferometer Driven by a Picosecond Frequency Comb

Cited by 8 publications

References 27 publications

Frequency comb atom interferometry

Frequency comb atom interferometry

A large-momentum-transfer matter-wave interferometer to measure the effect of gravity on positronium

Monte Carlo Simulation for the Frequency Comb Spectrum of an Atom Laser

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