Hello everyone! The topic of my presentation is a quantum computer. I'd like to tell you what exactly it is and when you can get one. And why everyone needs quantum computers. So, most modern people have a computer. We have a powerful car and everyone uses it for many reasons: to have fun, to work, to chat and many others. We live in the age of Big Data. The amount of information grows every year, every day, every second. Phone calls, climate data, social media, movies, music - all of this is stored on the computer. Furthermore, scientists need calculating machines to solve the problems of modern science (and some of them are impossible to calculate). And for this we need more and more power. Unfortunately, the power of our computers is limited. So is this the end? Yuri Manin and Richard Feynman don't think so. In 1980, Yuri Manin, a Soviet mathematician, proposed an idea of ​​quantum computing based on quantum mechanical phenomena, such as superposition and entanglement. (These words are not scary. It's simple. When an electron can be there and there at the same time. It's a superposition. When you determine one of two electrons, you can determine another at the same time. It's an entanglement )In 1981, a large American physicist Richard Feynman proposed a basic model for a quantum computer. Today, the development of quantum mechanics and technology allows us to create a real model for the quantum computer. Ordinary computers compute on a binary system of zeros and ones called bits. But quantum computers are much more powerful, they compute on quantum bits or qubits. There are numerous physical objects that can be used as qubits: a single atom, ions, a single photon, or an electron. But how does it work?... middle of paper......cracking. Quantum computer can crack any security code. And with the quantum computer the idea of ​​the coding system is lost. • Computational experiments for a new physical theory. Quantum computing can help solve problems in modern physics. Such as a vacuum state, string theory and others. Of course, these are great capabilities. Creating quantum computers has to be one of the biggest problems in the world of science. Additionally, some types of quantum computers are being built. In fact, the small Canadian company D-Wave System demonstrated the first 512-qubit quantum computer. Today, the theory of quantum physics is developing extremely quickly. It allows us to create a powerful quantum computer, which can change our lives, like a classical computer did. Imagine, you can model and calculate everything, you can know everything. And it's really near future or present day, we'll see.