Hello everyone! The topic of my presentation is a quantum computer. I would like to tell you what exactly it is and when you can get one. And why everyone needs quantum computers. So, most modern people own a computer. We have a powerful machine and everyone uses it for many reasons: for entertainment, for work, for chatting and many more. We live in the age of Big Data. The amount of information increases every year, every day, every second. Phone calls, climate data, social networks, films, music: all of this is stored on a computer. Furthermore, scientists need a calculating machine to solve the problems of modern science (and some of them are impossible to calculate). And for that 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 for 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.) In 1981, a great 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 true model of a quantum computer. Ordinary computers calculate on a binary system of zeros and ones called bits. But quantum computers are much more powerful: they calculate on quantum bits or qubits. There are a number of physical objects that can be used as a qubit: a single atom, ions, a single photon or an electron. But how does it work? ...... middle of paper ...... cracking. The quantum computer can crack all security codes. And with the quantum computer, the idea of ​​the coding system is lost. • Computational experiments for the new theory of physics. The quantum computer can help solve problems in modern physics. Like a vacuum state, string theory and such. Of course, these are great abilities. Creating a quantum computer must be a major problem in the scientific world. Additionally, some types of quantum computers are being built. In fact, small Canadian company D-Wave System demonstrated the first 512-qubit quantum computer. Today, the theory of quantum physics is developing extremely rapidly. It makes it possible to create a powerful quantum computer, which can change our lives, just like a classical computer did. Imagine, you can model and calculate everything, you can know everything. And it's a very near future or today, we'll see.