Details
| Original language | English |
|---|---|
| Article number | 113046 |
| Journal | New journal of physics |
| Volume | 23 |
| Issue number | 11 |
| Publication status | Published - 13 Dec 2020 |
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.
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In: New journal of physics, Vol. 23, No. 11, 113046, 13.12.2020.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Number-resolved preparation of mesoscopic atomic ensembles
AU - Hueper, A.
AU - Puer, C.
AU - Hetzel, M.
AU - Geng, J.
AU - Peise, J.
AU - Kruse, I
AU - Kristensen, M.
AU - Ertmer, W.
AU - Arlt, J.
AU - Klempt, C.
PY - 2020/12/13
Y1 - 2020/12/13
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85118383535&partnerID=8YFLogxK
U2 - 10.1088/1367-2630/abd058
DO - 10.1088/1367-2630/abd058
M3 - Article
VL - 23
JO - New journal of physics
JF - New journal of physics
SN - 1367-2630
IS - 11
M1 - 113046
ER -