Supercomputer Modelling of Josephson Qubits
Thanks to funding received under Project 5-100, UNN academics conduct research into the future of quantum computing.
Quantum computers are often called ‘the computers of tomorrow’ as they can solve problems of the same class as modern supercomputers by using only a few hundred qubits. In a quantum computer, a 'quantum bit', usually referred to as a 'qubit', can exist in two distinct states of the bit (a 0 or a 1) as well as in a superposition of both.
The main stumbling block today is the lack of sustainability in quantum computing in long times because of the influence of the environment and quantum correlations between elements (qubits) of a computer.
Josephson qubits are identified as being particularly promising. Josephson junctions are thin superconducting wires with dielectric layers [weak links] mounted on. A Josephson junction behaves like a quantum nonlinear pendulum in which two lower levels function as a qubit.
The research is being led by Prof. Arkady Satanin and Researcher Marina Denisenko from the Department of Theoretical Physics of the Faculty of Physics.