We experimentally demonstrate a multimode interferometer comprising a Bose-Einstein condensate of K-39 atoms trapped in a harmonic potential, where the interatomic interaction can be canceled exploiting Feshbach resonances. Kapitza-Dirac diffraction from an optical lattice coherently splits the BEC in multiple momentum components equally spaced that form different interferometric paths, with trajectories closed by the trapping harmonic potential. We investigate two different interferometric schemes, where the recombination pulse is applied after a full or half oscillation in the confining potential. We find that the relative amplitudes of the momentum components at the interferometer output are sensitive to external forces, through the induced displacement of the harmonic potential with respect to the optical lattice. We show how to calibrate the interferometer, fully characterize its output, and discuss perspective improvements.
Masi, L., Petrucciani, T., Burchianti, A., Fort, C., Inguscio, M., Marconi, L., et al. (2021). Multimode trapped interferometer with noninteracting Bose-Einstein condensates. PHYSICAL REVIEW RESEARCH, 3(4), 043188-1-043188-7 [10.1103/physrevresearch.3.043188].
Multimode trapped interferometer with noninteracting Bose-Einstein condensates
Minardi, Francesco
2021
Abstract
We experimentally demonstrate a multimode interferometer comprising a Bose-Einstein condensate of K-39 atoms trapped in a harmonic potential, where the interatomic interaction can be canceled exploiting Feshbach resonances. Kapitza-Dirac diffraction from an optical lattice coherently splits the BEC in multiple momentum components equally spaced that form different interferometric paths, with trajectories closed by the trapping harmonic potential. We investigate two different interferometric schemes, where the recombination pulse is applied after a full or half oscillation in the confining potential. We find that the relative amplitudes of the momentum components at the interferometer output are sensitive to external forces, through the induced displacement of the harmonic potential with respect to the optical lattice. We show how to calibrate the interferometer, fully characterize its output, and discuss perspective improvements.File | Dimensione | Formato | |
---|---|---|---|
Masi et al. - 2021 - Multimode trapped interferometer with noninteracti.pdf
accesso aperto
Tipo:
Versione (PDF) editoriale
Licenza:
Licenza per Accesso Aperto. Creative Commons Attribuzione (CCBY)
Dimensione
1.88 MB
Formato
Adobe PDF
|
1.88 MB | Adobe PDF | Visualizza/Apri |
SM-v3.pdf
accesso aperto
Tipo:
File Supplementare
Licenza:
Licenza per Accesso Aperto. Creative Commons Attribuzione (CCBY)
Dimensione
545.71 kB
Formato
Adobe PDF
|
545.71 kB | Adobe PDF | Visualizza/Apri |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.