Calculation of $$\pi $$ on the IBM quantum computer and the accuracy of one-qubit operations

Simulation of multiple-quantum NMR dynamics of spin dimer on quantum computer

“…Now we find the intensities of MQ NMR coherences assotiated with state (10). For this purpose we write the appropriate density matrix…”

“…Quantum calculations open new possibilities for solving problems of magnetic resonance including dynamics of many-body systems [3]. Although the accuracy of today's calculations on quantum computers is insufficient owing to errors of quantum gates it is still possible to perform quantum calculations for some relatively simple tasks [4][5][6][7][8][9][10]. Taking into account fantastic advantages of quantum computers over their classical counterparts which is expected to be released in future, development of quantum algorithms is a challenging and useful task.…”

Application of the Schwinger’s oscillator model of angular momentum to quantum computing

“…This actually determines the difference in the ways of constructing classical and quantum computers. We note that at present quantum computers are not yet mass-produced, but experimental samples have already been built (see, for example, the results of calculations carried out on one of them [2]).…”

Implementation of a Quantum Algorithm to Estimate the Energy of a Particle in a Finite Square Well Potential on IBM Quantum Computer

“…Since 2016, IBM has introduced a Cloud-based platform called IBM Q Experience [19] which allows users to access a set of prototype quantum processors (QPUs) and execute algorithms and experiments on them [20,21,22,23,24,25,26,27,28,29,30,31]. This platform currently consists of six 5 qubit devices, one 16 qubit and one 1 qubit devices together with a simulator used for checking algorithms before running real experiments.…”