| Title: |
Dimensional Control of the Coherence Time of Scattered Light in Cold Atom Clouds |
| Authors: |
Cipris, Ana; Biscassi, Mateus, a F; Capella, J, C C; Morisse, Martial; Naim, Hani; Sedlacek, Hugo; Deo, Apoorav Singh; Asselie, Stephan; Kaiser, Robin; Teixeira, Raul Celistrino; Bachelard, Romain; Hugbart, Mathilde |
| Contributors: |
Institut de Physique de Nice (INPHYNI); Université Nice Sophia Antipolis (1965 - 2019) (UNS)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UniCA); Instituto de Física de São Carlos Universidade de São Paulo (IFSC-USP); Universidade de São Paulo = University of São Paulo (USP); Federal University of São Carlos = Universidade Federal de São Carlos (UFSCar); Universidade Federal de Pernambuco Recife (UFPE); European Project: 832219,ERC-2018-ADG,ERC-2018-ADG,ANDLICA(2019) |
| Source: |
ISSN: 2469-9926. |
| Publisher Information: |
CCSD; American Physical Society |
| Publication Year: |
2026 |
| Collection: |
HAL Université Côte d'Azur |
| Subject Terms: |
Coherence; Light-matter Interactions; Cold atoms; [PHYS.PHYS.PHYS-ATOM-PH]Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph] |
| Description: |
International audience ; Cold atomic clouds are promising platforms for generating correlated photons, but multiple scattering and associated Doppler broadening limit their temporal coherence. Here we demonstrate that cloud geometry provides a powerful means to extend the coherence time of scattered light. In the experiment, intensity-correlation measurements show that an elongated (quasi-1D) cloud exhibits systematically longer coherence times than a spherical (3D) cloud of the same on-axis optical thickness, as a direct consequence of the suppression of multiple scattering in the elongated geometry. Random-walk simulations reproduce this trend and further show that elongation drives the coherence time toward the single-scattering limit. The combined results establish cloud geometry as a robust control parameter for temporal coherence in cold-atom ensembles, with potential applications in quantum optics and communication. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| Relation: |
info:eu-repo/grantAgreement//832219/EU/Anderson Localization of Light by Cold Atoms/ANDLICA |
| DOI: |
10.1103/x27v-k5kl |
| Availability: |
https://hal.science/hal-05280989; https://hal.science/hal-05280989v1/document; https://hal.science/hal-05280989v1/file/PRA_Coherence_Time_with_Cloud_Geometry.pdf; https://doi.org/10.1103/x27v-k5kl |
| Rights: |
https://about.hal.science/hal-authorisation-v1/ ; info:eu-repo/semantics/OpenAccess |
| Accession Number: |
edsbas.1E1A93B4 |
| Database: |
BASE |