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

verfasst von
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.

Organisationseinheit(en)
Institut für Quantenoptik
Quantum Atom Optics
QuantumFrontiers
Typ
Artikel
Journal
Physical Review A
ISSN
2469-9926
Publikationsdatum
20.01.2023
Publikationsstatus
Angenommen/Im Druck
Elektronische Version(en)
https://journals.aps.org/pra/accepted/5d077Nd8Hf913628b18f8c336aeec8edb3768507f (Zugang: Geschlossen)