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arXiv · 1312.6719

Photonic tuning of quasi-particle decay in a superfluid

G. Konya·G. Szirmai·D. Nagy·P. Domokos
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Abstract

We show that the damping rate of elementary excitations of hybrid systems close to a phase transition can undergo a remarkable resonance like enhancement before mode softening takes place. In particular, we consider the friction of a collective density wave in a homogeneous superfluid of weakly interacting bosonic atoms coupled to the electromagnetic field of a single mode optical resonator. Here the Beliaev damping can thus be controlled by an external laser drive and be enhanced by several orders of magnitude.

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G. Konya, G. Szirmai, D. Nagy, P. Domokos. 2013-12-23. Photonic tuning of quasi-particle decay in a superfluid. https://doi.org/10.1103/physreva.89.051601

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