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arXiv · 2405.01941

Giant effective $g$-factor due to spin bifurcations in polariton condensates

A. Bochin·I. Chestnov·A. Nalitov
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Abstract

We predict giant susceptibility of spin-bifurcating polariton condensates to externally applied permanent magnetic field. In the presence of spin-anisotropic polariton-polariton interactions, the condensate spontaneously takes an elliptically polarised state, {whose perturbation dynamics can be interpreted in terms of the presence of strong effective magnetic field} significantly surpassing the external one. Surprisingly, this behaviour of the addressed strongly out-of-equilibrium system in the vicinity of a critical point exhibits intriguing analogy with the second-order phase transition. The predicted field-enhancement effect can be utilized for creation of topologically nontrivial states of Bogoliubov's excitations existing on top of the polariton condensate.

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A. Bochin, I. Chestnov, A. Nalitov. 2024-05-03. Giant effective $g$-factor due to spin bifurcations in polariton condensates. https://arxiv.org/abs/2405.01941

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