A multi-state interferometer on an atom chip

Year: 2013

Authors: Petrovic J., Herrera I., Lombardi P., Schaefer F., Cataliotti F.S.

Autors Affiliation: European Laboratory for Nonlinear Spectroscopy (LENS), Via N. Carrara 1, 50019 Sesto F.no (FI), Italy; Vinca Institute of Nuclear Sciences, University of Belgrade, P. O. B. 522, 1100 Belgrade, Serbia; Dipartimento di Fisica e Astronomia, Universita di Firenze, via Sansone 1, 50019 Sesto F.no (FI), Italy

Abstract: Matter-wave interferometry is a powerful tool for high-precision measurements of the quantum properties of atoms, many-body phenomena and gravity. The most precise matter-wave interferometers exploit the excellent localization in momentum space and coherence of the degenerate gases. Further enhancement of the sensitivity and reduction of complexity are crucial conditions for the success and widening of their applications. Here we introduce a multi-state interferometric scheme that offers advances in both these aspects. The coherent coupling between Bose-Einstein condensates in different Zeeman states is used to generate high-harmonic output signals with an enhanced resolution and the maximum possible interferometric visibility. We demonstrate the realization of such an interferometer as a compact, easy to use, atomchip device. This provides an alternative method for the measurement of the light-atom and surface-atom interactions and enables the application of multi-parameter sensing schemes in cold-atom interferometry.

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Volume: 15      Pages from: 43002-1  to: 43002-13

More Information: We thank M Schrambock (Atominstitut, TU-Wien) at the ZMNS (TU-Wien) who realized the AtomChip we have used. We also thank M Inguscio for continuous support and many useful discussions. We acknowledge L Consolino and S Bartalini for help in the construction of the atom chip setup and C Fort, M Fattori and G Roati for useful discussions. We acknowledge financial support from the Future and Emerging Technologies (FET) programme within the Seventh Framework Programme for Research of the European Commission, under FET-Open grants MALICIA (265522) and CHIMONO (216774). JP acknowledges support from the Ministry of Science of Serbia (project no. III 45010) and the L’OREAL-UNESCO National Fellowship in Serbia, FS acknowledges the grant AQUTE and FSC acknowledges MIUR (project no. HYTEQ).
KeyWords: Precision; Interference
DOI: 10.1088/1367-2630/15/4/043002

Citations: 34
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