Abstract
Self-structuring via symmetry breaking is a prominent collective phenomenon occurring in cold and ultracold atoms coupled to optical fields [1] . Experimental realizations by means of trapped dipolar gases and optical cavities have shed light onto supersolidity and crystallization in out-of-equilibrium atomic systems [2] , [3] . Recent work demonstrated the occurrence of structural phase transitions between hexagonally coordinated supersolid phases in dipolar condensates [4] . In this work, we address 2D structural transitions occurring in an ensemble of cold thermal atoms with effective optomechanical interactions mediated by a coherent beam retro-reflected by means of a feedback mirror. The feedback loop scheme is represented in Fig. 1(a) , where the dipole potential induces atomic density structures which, in turn, scatter photons into side-band modes enhancing the potential itself and leading to transverse light-atom self-structuring, sharing similarities with an effective-Kerr nonlinear medium [5] .
Original language | English |
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Title of host publication | 2021 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) |
Place of Publication | Piscataway, NJ. |
Publisher | IEEE |
ISBN (Print) | 9781665418768 |
DOIs | |
Publication status | Published - 30 Sept 2021 |
Event | 2021 European Quantum Electronics Conference, EQEC 2021 - Part of 2021 Conference on Lasers and Electro-Optics Europe, CLEO 2021 - Virtual, Online, Germany Duration: 21 Jun 2021 → 25 Jun 2021 |
Conference
Conference | 2021 European Quantum Electronics Conference, EQEC 2021 - Part of 2021 Conference on Lasers and Electro-Optics Europe, CLEO 2021 |
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Country/Territory | Germany |
City | Virtual, Online |
Period | 21/06/21 → 25/06/21 |
Keywords
- ultracold atoms
- optical fields
- atomic systems
- optomechanics