Pré-Publication, Document De Travail Année : 2025

A simple magnetic field stabilization technique for atomic Bose-Einstein condensate experiments

Résumé

We demonstrate a simple magnetic field stabilization technique in a Bose-Einstein condensate experiment. Our technique is based on the precise measurement of the current fluctuations in the main magnetic field coils and amounts to their compensation using an auxiliary coil. It has the advantage of simplicity as compensation is done using a low inductance coil that can be straightforwardly driven at the relevant frequencies (1 kHz). The performances of the different components (power supply, current transducer, electronics...) are precisely characterized. In addition, for optimal stability the ambient magnetic field is also measured and compensated. The magnetic field stability around 57 G is measured by Ramsey spectroscopy of magnetic field sensitive radiofrequency transition between two spin states of potassium 39 and the shot-to-shot fluctuations are reduced to 64(7) µG rms, i.e. at the 1 × 10 -6 level. In the context of our experiment, this result opens interesting prospects for the study of three-body interactions in Bose-Einstein condensate potassium spin mixtures.
Fichier principal
Vignette du fichier
main_submission.pdf (474.31 Ko) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04894230 , version 1 (17-01-2025)

Identifiants

  • HAL Id : hal-04894230 , version 1

Citer

S Tiengo, R Eid, M Apfel, G Brulin, T Bourdel. A simple magnetic field stabilization technique for atomic Bose-Einstein condensate experiments. 2025. ⟨hal-04894230⟩

Collections

IOGS
0 Consultations
0 Téléchargements

Partager

More