Two-level control over quantum state creation via entangled equal-probability state

Авторы: Doronin S.I., Fel'dman E.B., Zenchuk A.I.
Журнал: Quantum Information Processing
Том: 24
Год издания: 2025
Издательство: Springer Nature
Местоположение издательства: Switzerland
Номер статьи: 54
DOI: 10.1007/s11128-025-04677-x
Аннотация: We propose the scheme realizing the two-level control over the unitary operators $U_k$ creating the required quantum state of the system $S$. These operators are controlled by the superposition state of the auxiliary subsystem $R$ which is governed by two control centers.The first-level control center (main control) creates the equal-probability pure state of $R$ with certain distribution of phase factors that, in turn, govern the power of the second-level control center $C$ that applies the special $V$-operators to the same subsystem $R$ changing its state and thus controlling the applicability of $U_k$. In addition, the above phases are responsible for the entanglement in the subsystem $R$. We find the direct relation between this entanglement and the number of operators $U_k$ that can be controlled by $C$. The simple example of a two-level control system governing the creation of entangled state of the two-qubit system $S$ is presented.
Добавил в систему: Зенчук Александр Иванович

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