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Entanglement and Photon Anti-Bunching in Coupled Non-Degenerate Parametric Oscillators.
- Source :
-
Entropy (Basel, Switzerland) [Entropy (Basel)] 2021 May 17; Vol. 23 (5). Date of Electronic Publication: 2021 May 17. - Publication Year :
- 2021
-
Abstract
- We analytically and numerically show that the Hillery-Zubairy's entanglement criterion is satisfied both below and above the threshold of coupled non-degenerate optical parametric oscillators (NOPOs) with strong nonlinear gain saturation and dissipative linear coupling. We investigated two cases: for large pump mode dissipation, below-threshold entanglement is possible only when the parametric interaction has an enough detuning among the signal, idler, and pump photon modes. On the other hand, for a large dissipative coupling, below-threshold entanglement is possible even when there is no detuning in the parametric interaction. In both cases, a non-Gaussian state entanglement criterion is satisfied even at the threshold. Recent progress in nano-photonic devices might make it possible to experimentally demonstrate this phase transition in a coherent XY machine with quantum correlations.
Details
- Language :
- English
- ISSN :
- 1099-4300
- Volume :
- 23
- Issue :
- 5
- Database :
- MEDLINE
- Journal :
- Entropy (Basel, Switzerland)
- Publication Type :
- Academic Journal
- Accession number :
- 34067765
- Full Text :
- https://doi.org/10.3390/e23050624