Mach-Zehnder atom interferometry with non-interacting trapped Bose Einstein condensates
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arXiv
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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866908336287383552 |
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| author | Petrucciani, Tommaso Santoni, Andrea Mazzinghi, Chiara Trypogeorgos, Dimitrios Cataliotti, Francesco S. Inguscio, Massimo Modugno, Giovanni Smerzi, Augusto Pezzé, Luca Fattori, Marco |
| author_facet | Petrucciani, Tommaso Santoni, Andrea Mazzinghi, Chiara Trypogeorgos, Dimitrios Cataliotti, Francesco S. Inguscio, Massimo Modugno, Giovanni Smerzi, Augusto Pezzé, Luca Fattori, Marco |
| contents | The coherent manipulation of a quantum wave is at the core of quantum sensing. For instance, atom interferometers require linear splitting and recombination processes to map the accumulated phase shift into a measurable population signal. Although Bose Einstein condensates (BECs) are the archetype of coherent matter waves, their manipulation between trapped spatial modes has been limited by the strong interparticle collisions. Here, we overcome this problem by using BECs with tunable interaction trapped in an innovative array of double-well potentials and exploiting quantum tunneling to realize linear beam splitting. We operate several Mach-Zehnder interferometers in parallel, canceling common-mode potential instabilities by a differential analysis, thus demonstrating a trapped-atom gradiometer. Furthermore, by applying a spin-echo protocol, we suppress additional decoherence sources and approach unprecedented coherence times of one second. Our interferometer will find applications in precision measurements of forces with a high spatial resolution and in linear manipulation of quantum entangled states for sensing with sub shot-noise sensitivity. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_17391 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Mach-Zehnder atom interferometry with non-interacting trapped Bose Einstein condensates Petrucciani, Tommaso Santoni, Andrea Mazzinghi, Chiara Trypogeorgos, Dimitrios Cataliotti, Francesco S. Inguscio, Massimo Modugno, Giovanni Smerzi, Augusto Pezzé, Luca Fattori, Marco Quantum Physics Quantum Gases Atomic Physics The coherent manipulation of a quantum wave is at the core of quantum sensing. For instance, atom interferometers require linear splitting and recombination processes to map the accumulated phase shift into a measurable population signal. Although Bose Einstein condensates (BECs) are the archetype of coherent matter waves, their manipulation between trapped spatial modes has been limited by the strong interparticle collisions. Here, we overcome this problem by using BECs with tunable interaction trapped in an innovative array of double-well potentials and exploiting quantum tunneling to realize linear beam splitting. We operate several Mach-Zehnder interferometers in parallel, canceling common-mode potential instabilities by a differential analysis, thus demonstrating a trapped-atom gradiometer. Furthermore, by applying a spin-echo protocol, we suppress additional decoherence sources and approach unprecedented coherence times of one second. Our interferometer will find applications in precision measurements of forces with a high spatial resolution and in linear manipulation of quantum entangled states for sensing with sub shot-noise sensitivity. |
| title | Mach-Zehnder atom interferometry with non-interacting trapped Bose Einstein condensates |
| topic | Quantum Physics Quantum Gases Atomic Physics |
| url | https://arxiv.org/abs/2504.17391 |