Number-resolved preparation of mesoscopic atomic ensembles

verfasst von: A. Hueper, C. Puer, M. Hetzel, J. Geng, J. Peise, I Kruse, M. Kristensen, W. Ertmer, J. Arlt, C. Klempt
Abstract: The analysis of entangled atomic ensembles and their application for interferometry beyond the standard quantum limit requires an accurate determination of the number of atoms. We present an accurate fluorescence detection technique for atoms that is fully integrated into an experimental apparatus for the production of many-particle entangled quantum states. Number-resolved fluorescence measurements with single-atom accuracy for 1 up to 30 atoms are presented. According to our noise analysis, we extrapolate that the single-atom accuracy extends to a limiting atom number of 390(20) atoms. We utilize the accurate atom number detection for a number stabilization of the laser-cooled atomic ensemble. For a target ensemble size of 7 atoms prepared on demand, we achieve a 92(2)% preparation fidelity and reach number fluctuations 18(1) dB below the shot noise level using real-time feedback on the magneto-optical trap.
Organisationseinheit(en): Institut für Quantenoptik
QuantumFrontiers
SFB 1227: Designte Quantenzustände der Materie (DQ-mat)
Externe Organisation(en): Westlake University
Aarhus University
DLR-Institut für Satellitengeodäsie und Inertialsensorik
Typ: Artikel
Journal: New journal of physics
Band: 23
ISSN: 1367-2630
Publikationsdatum: 13.12.2020
Publikationsstatus: Veröffentlicht
Peer-reviewed: Ja
ASJC Scopus Sachgebiete: Physik und Astronomie (insg.)
Elektronische Version(en): https://doi.org/10.1088/1367-2630/abd058 (Zugang: Offen)

BibTeX

@article{ad3e7ee530ce4e52a3c6ccf91d1556dd,
title = "Number-resolved preparation of mesoscopic atomic ensembles",
abstract = "The analysis of entangled atomic ensembles and their application for interferometry beyond the standard quantum limit requires an accurate determination of the number of atoms. We present an accurate fluorescence detection technique for atoms that is fully integrated into an experimental apparatus for the production of many-particle entangled quantum states. Number-resolved fluorescence measurements with single-atom accuracy for 1 up to 30 atoms are presented. According to our noise analysis, we extrapolate that the single-atom accuracy extends to a limiting atom number of 390(20) atoms. We utilize the accurate atom number detection for a number stabilization of the laser-cooled atomic ensemble. For a target ensemble size of 7 atoms prepared on demand, we achieve a 92(2)% preparation fidelity and reach number fluctuations 18(1) dB below the shot noise level using real-time feedback on the magneto-optical trap.",
author = "A. Hueper and C. Puer and M. Hetzel and J. Geng and J. Peise and I Kruse and M. Kristensen and W. Ertmer and J. Arlt and C. Klempt",
year = "2020",
month = dec,
day = "13",
doi = "10.1088/1367-2630/abd058",
language = "English",
volume = "23",
journal = "New journal of physics",
issn = "1367-2630",
publisher = "IOP Publishing Ltd.",
number = "11",
}