Effect of inter-well interactions on non-linear beam splitters for matter-wave interferometers
We study the non-linear beam splitter in matter-wave interferometers using ultracold quantum gases in a double-well configuration in presence of non-local interactions inducing inter-well density-density coupling, as they can be realized, e.g., with dipolar gases. We explore this effect after consid...
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| Main Authors: | , , , |
|---|---|
| Format: | Article (Journal) |
| Language: | English |
| Published: |
21 April 2020
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| In: |
Condensed Matter
Year: 2020, Volume: 5, Issue: 2, Pages: 1-16 |
| ISSN: | 2410-3896 |
| DOI: | 10.3390/condmat5020031 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.3390/condmat5020031 Verlag, lizenzpflichtig, Volltext: https://www.mdpi.com/2410-3896/5/2/31 |
| Author Notes: | Cosetta Baroni, Giacomo Gori, Maria Luisa Chiofalo and Andrea Trombettoni |
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| 520 | |a We study the non-linear beam splitter in matter-wave interferometers using ultracold quantum gases in a double-well configuration in presence of non-local interactions inducing inter-well density-density coupling, as they can be realized, e.g., with dipolar gases. We explore this effect after considering different input states, in the form of either coherent, or Twin-Fock, or NOON states. We first review the non-interacting limit and the case in which only the local interaction is present, including the study of sensitivity near the self-trapping threshold. Then, we consider the two-mode model in the presence of inter-well interactions and consider the scaling of the sensitivity as a function of the non-local coupling strength. Our analysis clearly shows that non-local interactions can compensate the degradation of the sensitivity induced by local interactions, so that they may be used to restore optimal sensitivity. | ||
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