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Título: | Synchronization and coalescence in a dissipative two-qubit system |
Autor: | Cabot Martorell, Albert CSIC ORCID; Giorgi, Gian Luca CSIC ORCID ; Zambrini, Roberta CSIC ORCID | Fecha de publicación: | 23-dic-2019 | Editor: | arXiv | Citación: | Cabot Martorell, Albert; Giorgi, Gian Luca; Zambrini, Roberta; 2019; Synchronization and coalescence in a dissipative two-qubit system [Preprint]; arXiv; https://arxiv.org/abs/1912.10984 | Resumen: | The possibility for detuned spins to display synchronous oscillations in local observables is analyzed in the presence of collective dissipation and incoherent pumping. We show that there exist two distinct mechanisms that can give rise to synchronization, that is, non-degenerate subradiance and coalescence. The former, known as transient synchronization, is here generalized in the presence of pumping. It is due to long-lasting coherences leading to a progressive frequency selection. In the same set-up, even if under different conditions, coalescence and exceptional points are found which can lead to regimes where a single oscillation frequency is present in the relevant quantities. Still, we show that synchronization can be established only after steady phase-locking occurs. Distinctive spectral features of synchronization by these two different mechanisms are reported for two-time correlations. | Versión del editor: | https://arxiv.org/abs/1912.10984 | URI: | http://hdl.handle.net/10261/240865 | DOI: | https://arxiv.org/abs/1912.10984 |
Aparece en las colecciones: | (IFISC) Artículos |
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