Nonlinear Bragg interferometer with a trapped Bose-Einstein condensate

Year: 2021

Authors: Corgier R., Pezzè L., Smerzi A.

Autors Affiliation: Qstar, INO-CNR, Lens, Largo Enrico Fermi 2, Firenze, 50125, Italy

Abstract: We propose a scheme for trapped-atom interferometry using an interacting Bose-Einstein condensate. The condensate is controlled and spatially split into two confined external momentum modes through a series of Bragg pulses. The proposed scheme (i) allows the generation of large entanglement in a trapped-interferometer configuration via one-axis twisting dynamics induced by interatomic interaction and (ii) avoids the suppression of interactions during the interferometer sequence by a careful manipulation of the state before and after phase encoding. The interferometer can be used for the measurement of gravity with a sensitivity beyond the standard quantum limit.


Volume: 103 (6)      Pages from: L061301-1  to: L061301-7

More Information: The authors thank Carsten Klempt, Naceur Gaaloul, Alessia Burchianti, Chiara d´Errico, Marco Fattori, Chiara Fort, Francesco Minardi, and Samuel Nolan for fruitful discussions. This work was supported by the European Unions Horizon 2020 research and innovation program, Qombs Project, FET Flagship on Quantum Technologies Grant No. 820419.
KeyWords: atom; constant; sensors; noise
DOI: 10.1103/PhysRevA.103.L061301