https://doi.org/10.1140/epjp/s13360-024-05833-5
Regular Article
Dispersion-managed elliptical atomtronics for interferometry
1
Department of Physics, Indian Institute of Technology, 801106, Patna, Bihar, India
2
Department of Physics, Indian Institute of Science Education and Research, 741246, Kolkata, West Bengal, India
3
Department of Physics, C. V. Raman Global University, 752054, Bhubaneshwar, Odisha, India
Received:
12
August
2024
Accepted:
12
November
2024
Published online:
29
November
2024
Circular atomtronics is known to exhibit a uniform ground state, unlike elliptical atomtronics. In elliptical atomtronics, the matter wave tends to accumulate along the semimajor edges during its time dynamics, which we depict by the survival function. Consequently, the dynamical time scales become coupled to the eccentricity, making the dynamics nontrivial for applications. We report that an appropriate dispersion management can decouple the time scales from the eccentricity. One can choose the suitable dispersion coefficient from the overlap function involving the corresponding ground state. We focus on producing distinct fractional matter waves inside an elliptical waveguide to achieve efficient atom interferometry. The said dispersion engineering can recover fractional revivals in the elliptical waveguide, analogous to the circular case. We demonstrate atom interferometry for the engineered elliptical atomtronics, where matter wave interference is mediated by an external harmonic trap for controlled interference patterns.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
