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arXiv · 0708.0436

Direct Estimation of Single- and Two-Qubit Hamiltonians and Relaxation Rates

M. Mohseni·A. T. Rezakhani·A. Aspuru-Guzik
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Abstract

We provide a novel approach for characterization of quantum Hamiltonian systems via utilizing a single measurement device. Specifically, we demonstrate how external quantum correlations can be used for Hamiltonian identification tasks. We explicitly introduce experimental procedures for direct estimation of single- and two-qubit Hamiltonian parameters, and also for simultaneous estimation of transverse and longitudinal relaxation rates, using a single Bell-state analyzer. An advantage of our method over the earlier approaches is that it has a built-in feature which makes it suitable for partial characterization of Hamiltonian parameters.

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M. Mohseni, A. T. Rezakhani, A. Aspuru-Guzik. 2008-04-23. Direct Estimation of Single- and Two-Qubit Hamiltonians and Relaxation Rates. https://doi.org/10.1103/physreva.77.042320

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