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Quantum logic gates from time-dependent global magnetic field in a system with constant exchange

Авторы: Nenashev A.V., Zinovieva A.F., Dvurechenskii A.V., Gornov A.Yu., Zarodnyuk T.S.

Журнал: J. of Applied Physics

Том: 117

Номер: 11

Год: 2015

Отчётный год: 2015

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DOI: 10.1063/1.4915347

Аннотация: We propose a method that implements a universal set of one- and two-quantum-bit gates for quantum computation in a system of coupled electron pairs with constant non-diagonal exchange interaction. In our proposal, suppression of the exchange interaction is performed by the continual repetition of single-spin rotations. A small g-factor difference between the electrons allows for addressing qubits and avoiding strong magnetic field pulses. Numerical experiments were performed to show that, to implement the one-and two-qubit operations, it is sufficient to change the strength of the magnetic field by a few Gauss. This introduces one and then the other electron in a resonance. To determine the evolution of the two-qubit system, we use the algorithms of optimal control theory. (C) 2015 AIP Publishing LLC

Индексируется WOS: Q2

Индексируется Scopus: Нет

Индексируется УБС: Нет

Индексируется РИНЦ: Нет

Индексируется ВАК: Нет

Индексируется CORE: Нет

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