Rapid generation and number-resolved detection of spinor Rubidium Bose-Einstein condensates

authored by: Cebrail Pür, Mareike Hetzel, Martin Quensen, Andreas Hüper, Jiao Geng, Jens Kruse, Wolfgang Ertmer, Carsten Klempt
Abstract: High data acquisition rates and low-noise detection of ultracold neutral atoms present important challenges for the state tomography and interferometric application of entangled quantum states in Bose-Einstein condensates. In this article, we present a high-flux source of \(^{87}\)Rb Bose-Einstein condensates combined with a number-resolving detection. We create Bose-Einstein condensates of \(2\times10^5\) atoms with no discernible thermal fraction within \(3.3\) s using a hybrid evaporation approach in a magnetic/optical trap. For the high-fidelity tomography of many-body quantum states in the spin degree of freedom [arXiv:2207.01270], it is desirable to select a single mode for a number-resolving detection. We demonstrate the low-noise selection of subsamples of up to \(16\) atoms and their subsequent detection with a counting noise below \(0.2\) atoms. The presented techniques offer an exciting path towards the creation and analysis of mesoscopic quantum states with unprecedented fidelities, and their exploitation for fundamental and metrological applications.
Organisation(s): Institute of Quantum Optics
Quantum Atom Optics
QuantumFrontiers
CRC 1227 Designed Quantum States of Matter (DQ-mat)
External Organisation(s): DLR-Institute for Satellite Geodesy and Inertial Sensing
Westlake University
Type: Article
Journal: Physical Review A
Volume: 107
ISSN: 2469-9926
Publication date: 06.03.2023
Publication status: Published
ASJC Scopus subject areas: Atomic and Molecular Physics, and Optics
Electronic version(s): https://doi.org/10.48550/arXiv.2301.08172 (Access: Open)
https://doi.org/10.1103/PhysRevA.107.033303 (Access: Closed)

BibTeX

@article{3dacc9ee04944c31b85f9c61eb3df6d2,
title = "Rapid generation and number-resolved detection of spinor Rubidium Bose-Einstein condensates",
abstract = " High data acquisition rates and low-noise detection of ultracold neutral atoms present important challenges for the state tomography and interferometric application of entangled quantum states in Bose-Einstein condensates. In this article, we present a high-flux source of \(^{87}\)Rb Bose-Einstein condensates combined with a number-resolving detection. We create Bose-Einstein condensates of \(2\times10^5\) atoms with no discernible thermal fraction within \(3.3\) s using a hybrid evaporation approach in a magnetic/optical trap. For the high-fidelity tomography of many-body quantum states in the spin degree of freedom [arXiv:2207.01270], it is desirable to select a single mode for a number-resolving detection. We demonstrate the low-noise selection of subsamples of up to \(16\) atoms and their subsequent detection with a counting noise below \(0.2\) atoms. The presented techniques offer an exciting path towards the creation and analysis of mesoscopic quantum states with unprecedented fidelities, and their exploitation for fundamental and metrological applications. ",
keywords = "cond-mat.quant-gas, physics.atom-ph, quant-ph",
author = "Cebrail P{\"u}r and Mareike Hetzel and Martin Quensen and Andreas H{\"u}per and Jiao Geng and Jens Kruse and Wolfgang Ertmer and Carsten Klempt",
note = "Funding Information: This work is supported by the QuantERA grants SQUEIS and MENTA. We acknowledge financial support from the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) - Project-ID 274200144 - SFB 1227 DQ-mat within Project No. B01 and Germany's Excellence Strategy - EXC-2123 QuantumFrontiers - Project No. 390837967. M.Q. acknowledges support from the Hannover School for Nanotechnology (HSN).",
year = "2023",
month = mar,
day = "6",
doi = "10.48550/arXiv.2301.08172",
language = "English",
volume = "107",
journal = "Physical Review A",
issn = "2469-9926",
publisher = "American Physical Society",
number = "3",
}