We propose a scheme for the implementation of quantum gates which is based on the qubit encoding inantiferromagnetic molecular rings.We show that a proper engineering of the intercluster link would resultin an effective coupling that vanishes as far as the system is kept in the computational space, while it isturned on by a selective excitation of specific auxiliary states. These are also shown to allow theperforming of single-qubit and two-qubit gates without an individual addressing of the rings by meansof local magnetic fields.
Proposal for Quantum-gate in permanently coupled AF spin rings, without need of local fields / F., Troiani; Affronte, Marco; S., Carretta; P., Santini; G., Amoretti. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 94:(2005), pp. 190501-190505.
Proposal for Quantum-gate in permanently coupled AF spin rings, without need of local fields.
AFFRONTE, Marco;
2005
Abstract
We propose a scheme for the implementation of quantum gates which is based on the qubit encoding inantiferromagnetic molecular rings.We show that a proper engineering of the intercluster link would resultin an effective coupling that vanishes as far as the system is kept in the computational space, while it isturned on by a selective excitation of specific auxiliary states. These are also shown to allow theperforming of single-qubit and two-qubit gates without an individual addressing of the rings by meansof local magnetic fields.
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