Scientific Festival of the International Scientific Physics Olympiad

Dear team leaders, participants, and guests of the Olympiad! We start our publications of Scientific Festival of the Physics Olympiad!

Publications of Scientific Festival you can find here

The format is the same as the last year - the lectures on physics, engineering, and interdisciplinary sciences that help you expand your horizons and prepare for the challenges at ISPhO + methodical part with the specific problems.

1. Let's watch first part of the lecture "Quantum Mechanics. Basic notions" by PhD, Professor of MIPT Landau Department of Theoretical Physics Mikhail Ivanov. In this lecture we overview the structure and interpretation of quantum mechanics using the example of one-dimensional particle motion.

• Quantum mechanics. Basic notions (VK)

And to our first lecture, we've got some problems for you to work on, so you can practice and consolidate what you've learned from the lecture. You can use literally anything to solve the problems.

ISPhO 2025. Science Festival. Quantum Mechanics

Keys for tasks you can find here:

T1. Particle in infinite narrow well

T2. Two-level sistem

2. For your attention the second part of the lecture "Quantum Mechanics. Basic notions" by Mikhail Ivanov. We continue involving in the world of quantum mechanics. Enjoy the lecture!

• Quantum mechanics. Basic notions. Part 2 (VK)

Also, have a look at tasks related to the lecture

ISPhO 2025. Science Festival. Quantum Mechanics. Part 2

Keys for tasks you can find here:

T3. Quantum well with electrons

T4. Ramsauer–Townsend effect

3. Lecture №3 - "Introduction to X-ray Astronomy" by PhD, Research Fellow at Space Research Institute of Russian Academy of Sciences, Natalia Lyskova

• Introduction to X-ray Astronomy (VK)

Also, have a look at tasks related to the lecture:

ISPhO 2025. Science Festival. Introduction to X-ray Astronomy

Keys for tasks you can find here:

Т5. Cyclotron resonant scattering features

4. We continue our Scientific Festival and offer you to watch lecture №4 "Light guiding and Bragg gratings" by PhD, Leading Researcher of the Institute of Theoretical and Applied Electrodynamics of Russian Academy of Sciences Alexander Dorofeenko

• Light guiding and Bragg gratings (VK)

Also, have a look at tasks related to the lecture:

ISPhO 2025. Science Festival. Light guiding and Bragg gratings

Keys for tasks you can find here:

Т6. Fiber Bragg grating mirror

Т7. Fabry-Perot cavity in fiber

5. We prepared a mini-review of tunneling and the technology that enables the manufacturing of a tunneling junction. We also present two problems related to quantum devices that operate based on these principles.

ISPhO 2025. Science Festival. Quantum devices

6. The Academic Committee of the Olympiad recommends watching an important lecture from the last year "On the basics of semiconductors physics" by PhD in Physics and Mathematics, Head of Laboratory on New Materials for IR Photonics at Lebedev Physical Institute Sergei Nikolaev. We'll look at this topic from the history of semiconductors and to the basic concepts and new horizons opened up after the discovery of graphene.

• On the basics of semiconductors physics (VK)

Also, have a look at tasks related to the lecture:

ISPhO 2025. Science festival. Semiconductor