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Efficient atomic lensing of quantum gas mixtures

Meister, Matthias und Roura, Albert (2022) Efficient atomic lensing of quantum gas mixtures. In: Frontiers of Matter Wave Optics 2022. Frontiers of Matter Wave Optics 2022, 2022-09-19 - 2022-09-23, Trieste, Italien.

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Offizielle URL: https://www.matterwaveoptics.eu/fomo2022-conference-2/

Kurzfassung

Mixtures of ultracold quantum gases are at the heart of currently planned high-precision quantum tests of the weak equivalence principle, where dual-species Bose-Einstein condensates are probed with atom interferometry techniques. An important challenge for such experiments is to reach very low expansion velocities by means of time-dependent potentials acting as matter-wave lenses while ensuring the co-location of the two atomic species and matching their expansion rates during the whole free evolution. To achieve the required control, one lensing pulse is needed for each independent spatial direction and atomic species, which makes a full 3D implementation rather impractical. Here we propose to overcome these challenges by taking advantage of special magic wavelengths for optical dipole traps where the ratio of the optical potentials is given by the ratio of the masses of the different species. In this case the center-of-mass dynamics is identical for all species, resulting in a perfect co-location of the mixture even in an Earth-based laboratory. Most importantly, optical dipole traps with such a magic laser wavelength give riseto a common expansion dynamics for both species and therefore guarantee that the relative shape of the mixture is conserved during the entire evolution, including when the lensing potentials are applied. Hence, our approach enables an efficient collimation of mixtures of ultracold atoms in order to reach the very low expansion rates that are necessary for highprecision measurements while cutting in half the number of required lensing pulses compared to standard approaches.

elib-URL des Eintrags:https://elib.dlr.de/190414/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Efficient atomic lensing of quantum gas mixtures
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Meister, MatthiasMatthias.Meister (at) dlr.dehttps://orcid.org/0000-0001-7210-8588NICHT SPEZIFIZIERT
Roura, AlbertAlbert.Roura (at) dlr.dehttps://orcid.org/0000-0002-8049-8982NICHT SPEZIFIZIERT
Datum:20 September 2022
Erschienen in:Frontiers of Matter Wave Optics 2022
Referierte Publikation:Ja
Open Access:Ja
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:Quantum gas mixtures, matter-wave lensing, optical dipole trap, weak equivalence principle test
Veranstaltungstitel:Frontiers of Matter Wave Optics 2022
Veranstaltungsort:Trieste, Italien
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:19 September 2022
Veranstaltungsende:23 September 2022
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Kommunikation, Navigation, Quantentechnologien
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R KNQ - Kommunikation, Navigation, Quantentechnologie
DLR - Teilgebiet (Projekt, Vorhaben):R - Projekt BECCAL, R - Projekt Q-GRAV – Schnittstelle Quanten und Gravitation
Standort: Ulm
Institute & Einrichtungen:Institut für Quantentechnologien > Theoretische Quantenphysik
Hinterlegt von: Meister, Dr. Matthias
Hinterlegt am:21 Nov 2022 23:14
Letzte Änderung:24 Apr 2024 20:51

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