arXiv:1007.5370 · Europhysics Letters (EPL)

Estimation of spin-spin interaction by weak measurement scheme

Yutaka Shikano, Shu Tanaka

Published Nov 1, 2011• 17 citations

Abstract

Precisely knowing an interaction Hamiltonian is crucial to realize quantum information tasks, especially to experimentally demonstrate a quantum computer and a quantum memory. We propose a scheme to experimentally evaluate the spin-spin interaction for a two-qubit system by the weak measurement technique initiated by Yakir Aharonov and his colleagues. Furthermore, we numerically confirm our proposed scheme in a specific system of a nitrogen vacancy center in diamond. This means that the weak measurement can also be taken as a concrete example of the quantum process tomography.

DOI: 10.1209/0295-5075/96/40002

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