Abstract
The reason for the quantum computing idea origin is the fundamental limitation of "classical" computers to solve a certain class of problems with a need to attract "exponentially" large computational resources. Real quantum systems are exposed to an external environment, which is a significant obstacle in the quantum computers appearance. The article proposes one of the approaches to the assessment of external influences in the framework of solving the problem of preserving reliable information in quantum systems by simulating a noise influence on qubit and bit signals using annual Markov chains. It is shown that in the situation of extraneous influence of “noise” distributed according to the exponential law, the quantum system enters an unstable state.
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