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)