Synchronization of Bloch oscillations by a ring cavity
| Autor: | Nicola Piovella, Romain Bachelard, Marina Samoylova, Gordon R. M. Robb, Philippe W. Courteille |
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| Rok vydání: | 2015 |
| Předmět: |
Physics
Condensed Matter::Quantum Gases Optical lattice Field (physics) Dephasing FOS: Physical sciences Physics::Optics Atomic and Molecular Physics and Optics law.invention QC350 FÍSICA ATÔMICA Quantum Gases (cond-mat.quant-gas) law Ultracold atom Atom optics Bloch oscillations Physics::Atomic Physics Atomic physics Condensed Matter - Quantum Gases Noise (radio) Bose–Einstein condensate |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| ISSN: | 1094-4087 |
| Popis: | We consider Bloch oscillations of ultracold atoms stored in a one-dimensional vertical optical lattice and simultaneously interacting with a unidirectionally pumped optical ring cavity whose vertical arm is collinear with the optical lattice. We find that the feedback provided by the cavity field on the atomic motion synchronizes Bloch oscillations via a mode-locking mechanism, steering the atoms to the lowest Bloch band. It also stabilizes Bloch oscillations against noise, and even suppresses dephasing due to atom-atom interactions. Furthermore, it generates periodic bursts of light emitted into the counter-propagating cavity mode, providing a non-destructive monitor of the atomic dynamics. All these features may be crucial for future improvements of the design of atomic gravimeters based on recording Bloch oscillations. 14 pages, 7 figures |
| Databáze: | OpenAIRE |
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