Dissipation-induced structural instability and chiral dynamics in a quantum gas
| Autor: | Manuele Landini, Katrin Kroeger, Tilman Esslinger, Nishant Dogra, Tobias Donner, Lorenz Hruby |
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| Rok vydání: | 2018 |
| Předmět: |
Physics
Coupling Condensed Matter::Quantum Gases Multidisciplinary Field (physics) Bose gas FOS: Physical sciences Dissipation 01 natural sciences Instability 010305 fluids & plasmas 3. Good health law.invention Resonator law Quantum Gases (cond-mat.quant-gas) Optical cavity Quantum mechanics 0103 physical sciences Dissipative system 010306 general physics Condensed Matter - Quantum Gases |
| Zdroj: | Science |
| ISSN: | 1095-9203 |
| Popis: | Dissipative and unitary processes define the evolution of a many-body system. Their interplay gives rise to dynamical phase transitions and can lead to instabilities. We discovered a non-stationary state of chiral nature in a synthetic many-body system with independently controllable unitary and dissipative couplings. Our experiment is based on a spinor Bose gas interacting with an optical resonator. Orthogonal quadratures of the resonator field coherently couple the Bose-Einstein condensate to two different atomic spatial modes whereas the dispersive effect of the resonator losses mediates a dissipative coupling between these modes. In a regime of dominant dissipative coupling we observe the chiral evolution and map it to a positional instability. Comment: 13 pages including supplementary information |
| Databáze: | OpenAIRE |
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