Introduction to Quantum Computing

15 credits

Classical computers are based on bits, which are either 0 or 1. Quantum computers, on the other hand, use qubits, which can be both 0 and 1 simultaneously, thanks to a phenomenon called superposition. This allows quantum computers to process much more information at once. Another unique feature is entanglement, where qubits affect each other regardless of distance, enabling faster problem solving.

In quantum computers, quantum gates like the Hadamard and Pauli gates are used to manipulate qubits. Algorithms such as Shor's factoring algorithm and Grover's search algorithm demonstrate quantum computers' ability to solve problems faster than classical computers.

In fields like quantum chemistry, quantum computers can simulate molecules and calculate energies with high precision. Quantum cryptography and quantum teleportation open new doors for secure communication.

The development of physical qubits — from ion traps to superconducting circuits — is ongoing, though challenges like decoherence, where qubits lose their quantum information, require advanced error-correction techniques.

Recent advancements have improved the performance of quantum computers, and although the technology is still young, it is expected to soon revolutionize both science and industry.

Kalmar – the student city by the sea

In Kalmar centre, right next to the sea, you will find the university’s facilities that were inaugurated in August 2021. In Kalmar, everything is nearby, and you can take your bicycle to the university regardless of where you live in the city.

New students have housing guarantee. This means that you are entitled to student accommodation within two months. This is one of the reasons for Kalmar being appointed Student City of the Year 2023 by the Swedish National Union of Students. Kalmar has also received the award because the city offers students an excellent living environment. What is more, the city works actively to create opportunities for students to stay in Kalmar to work when they have completed their studies.

Kalmar municipality has about 70 000 inhabitants. Kalmar has a strong trade and industry with many companies that are on the forefront in green energy, e-commerce, and eHealth, which means there is good opportunity to establish contacts for your future work life.

Kalmar has a cultural history centre and has been named Sweden’s Summer City several times. No wonder, with all the hours of sun, beaches and concerts. What is more, the island of Öland is just one bridge away.

Learn more about our student cities

House Vita at universitetskajen in Kalmar

Build your own degree

Did you know that you can combine single-subject courses to build your own degree? In this way, you can design your own degree based on your interests and the career you are aiming for. This does not apply to all courses so make sure to check with a study counsellor at the faculty. Learn more about how you can build your own degree and become unique on the labour market.