Atomic Raman scattering

Third-order diffraction in a double geometry

verfasst von: Sabrina Hartmann, Jens Jenewein, Sven Abend, Albert Roura, Enno Giese
Abstract: In a retroreflective scheme with an atom initially at rest, atomic Raman diffraction adopts some of the properties of Bragg diffraction due to additional couplings to off-resonant momenta. As a consequence, double Raman diffraction has to be performed in a Bragg-type regime, where the pulse duration is sufficiently long to suppress diffraction into spurious orders. Taking advantage of this regime, double Raman allows for resonant higher-order diffraction. We study theoretically the case of third-order diffraction and compare it to first order as well as a sequence of first-order Raman pulses giving rise to the same momentum transfer as the third-order pulse. Moreover, we demonstrate that interferometry is possible, and we investigate amplitude and contrast of a third-order double Raman Mach-Zehnder interferometer. In fact, third-order diffraction constitutes a competitive tool for the diffraction of ultracold atoms and interferometry based on large momentum transfer since it allows one to reduce the complexity of the experiment as well as the total duration of the diffraction process compared to a sequence, at the cost of higher pulse intensities.
Organisationseinheit(en): Institut für Quantenoptik
Externe Organisation(en): Universität Ulm
Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR)
Typ: Artikel
Journal: Physical Review A
Band: 102
ISSN: 2469-9926
Publikationsdatum: 22.12.2020
Publikationsstatus: Veröffentlicht
Peer-reviewed: Ja
ASJC Scopus Sachgebiete: Atom- und Molekularphysik sowie Optik
Elektronische Version(en): http://arxiv.org/abs/2007.02635 (Zugang: Offen)
https://doi.org/10.1103/PhysRevA.102.063326 (Zugang: Geschlossen)
https://doi.org/10.1103/PhysRevA.106.029904 (Zugang: Geschlossen)

BibTeX

@article{74048cd319e64282bb1e53ecf62c986c,
title = "Atomic Raman scattering: Third-order diffraction in a double geometry",
abstract = "In a retroreflective scheme with an atom initially at rest, atomic Raman diffraction adopts some of the properties of Bragg diffraction due to additional couplings to off-resonant momenta. As a consequence, double Raman diffraction has to be performed in a Bragg-type regime, where the pulse duration is sufficiently long to suppress diffraction into spurious orders. Taking advantage of this regime, double Raman allows for resonant higher-order diffraction. We study theoretically the case of third-order diffraction and compare it to first order as well as a sequence of first-order Raman pulses giving rise to the same momentum transfer as the third-order pulse. Moreover, we demonstrate that interferometry is possible, and we investigate amplitude and contrast of a third-order double Raman Mach-Zehnder interferometer. In fact, third-order diffraction constitutes a competitive tool for the diffraction of ultracold atoms and interferometry based on large momentum transfer since it allows one to reduce the complexity of the experiment as well as the total duration of the diffraction process compared to a sequence, at the cost of higher pulse intensities.",
author = "Sabrina Hartmann and Jens Jenewein and Sven Abend and Albert Roura and Enno Giese",
note = "Funding Information: We thank M. Gebbe, M. Gersemann, C. M. Carmesin, A. Friedrich, and the whole QUANTUS group in Ulm as well as our partners of the QUANTUS collaboration for fruitful discussions, as well as J.-N. Siem{\ss} for helpful comments on our manuscript. This work is supported by the German Aerospace Center (Deutsches Zentrum f{\"u}r Luft- und Raumfahrt, DLR) with funds provided by the Federal Ministry for Economic Affairs and Energy (Bundesministerium f{\"u}r Wirtschaft und Energie, BMWi) due to an enactment of the German Bundestag under Grants No. DLR 50WM1556 (QUANTUS IV), DLR 50WM1956 (QUANTUS V), DLR 50WP1700 and 50WP1705 (BECCAL), and 50RK1957 (QGYRO) as well as the Association of German Engineers (Verein Deutscher Ingenieure, VDI) with funds provided by the Federal Ministry of Education and Research (Bundesministerium f{\"u}r Bildung und Forschung, BMBF) under Grant No. VDI 13N14838 (TAIOL). E.G. thanks the German Research Foundation (Deutsche Forschungsgemeinschaft, DFG) for a Mercator Fellowship within CRC 1227 (DQ-mat). We thank the Ministry of Science, Research and Art Baden-W{\"u}rttemberg (Ministerium f{\"u}r Wissenschaft, Forschung und Kunst Baden-W{\"u}rttemberg) for financially supporting the work of .",
year = "2020",
month = dec,
day = "22",
doi = "10.1103/PhysRevA.102.063326",
language = "English",
volume = "102",
journal = "Physical Review A",
issn = "2469-9926",
publisher = "American Physical Society",
number = "6",
}