On October 31, 2024, we hosted a seminar titled “Quantum Computing for Cloud Droplet Collision-Coalescence Growth Process” with Mr. Ueno Kazuma from the Graduate School of Science at the University of Tokyo as our guest speaker.

The seminar began with an introduction to the fundamentals of quantum computing. Mr. Ueno explained that quantum bits, or qubits, can simultaneously hold a superposition of states 0 and 1, enabling massive parallel computations. This characteristic grants quantum computers the ability to efficiently solve computational problems in high-dimensional spaces. One application discussed was the simulation of cloud droplet collision and coalescence processes. Traditional methods often require enormous computational time, but quantum computing significantly reduces the necessary computational resources, making it possible to efficiently determine probability distributions and other related calculations.

In his presentation, Mr. Ueno demonstrated a model based on the Stochastic Collection Equation (SCE) and introduced methods for efficiently analyzing this using quantum computing. At the same time, he highlighted some critical challenges that remain before the technology can be fully implemented in practical scenarios.

Although the topic is highly complex, Mr. Ueno delivered a well-structured presentation, starting with the basics and progressing step by step. This approach made the content more accessible and piqued the audience’s interest. We appreciate this valuable presentation and the insights it provided.