We are pleased to announce the first 'Trends of Polaritonics' workshop at Skolkovo Institute of Science and Technology. The intention of this workshop is to bring together a diverse group of experts to create an educational and informative environment in which to discuss the current directions the field is moving in.

As follows from the broad title, 'Trends in Polaritonics', may cover many aspects of the field, however this first meeting will specifically be discussing three topics currently in polaritonics:

• Kardar-Parisi-Zhang (KPZ) universality class
• Perovskites
• Gross-Pitaevskii Equation simulations

We aim to have detailed and enlightening talks of approximately 40 minutes duration followed by moderated discussions.

'Trends in Polaritonics' span many topics, this year will be focusing on three main directions, with round-table informal discussions in each of them:

1. The KPZ physics part of the meeting will be dedicated to the understanding of Kardar-Parisi-Zhang universality class in superfluid systems. The aim of this section of the workshop is to provide some understanding for the students on the physics and senior scientist of the KPZ universality class and the possibility of observing this behaviour in two dimensions in polaritonic systems. We will address how the KPZ equation applies to polaritons, how this behaviour can be observed in polaritonic systems, and, the relevance of observing this universal class in one- and two-dimensional systems.

2. Within the perovskite-related section the topics will include (but are not limited to):

• synthesis methodology;
• optical and electrical properties of the perovskite;
• different forms/crystals of perovskite;
• developments of perovskite microcavities for polaritonics.

3. The Gross-Pitaevskii Equation based simulations part will be dedicated to the specifics of the GPE modeling in context of superfluid phenomena and polaritonic systems. The aim if this part of the workshop is to exchange some experience and state-of-the-art of such nonlinear and often coupled-equations simulations which usually stay "behind the scenes" in any large-scale-conference talks. It will include both technical topics, such as

• general methodology;
• parallel computing;
• using of GPU/cuda;
• specifics of GPE simulations in C++/Python; Wolfram Mathematica; MatLab;

etc.

and more physics-related specifics:

• correct addressing of the excitonic reservoir(s);
• inclusion of incoherent polaritons into consideration;
• stochasticity and effects of noise;
• specifics of changing the dimension (approximating 2D systems with 1D description);

etc.