Direct estimation of single- and two-qubit Hamiltonians and relaxation rates

被引：13
|
作者：
Mohseni, M. [1 ]
Rezakhani, A. T. [2 ,3 ]
Aspuru-Guzik, A. [1 ]
机构：
[1] Harvard Univ, Sch Med, Dept Chem & Chem Biol, Cambridge, MA 02138 USA
[2] Univ So Calif, Ctr Quantum Informat Sci & Technol, Los Angeles, CA 90089 USA
[3] Univ Calgary, Inst Quantum Informat Sci, Calgary, AB T2N 1N4, Canada
来源：
PHYSICAL REVIEW A | 2008年 / 77卷 / 04期
关键词：
D O I：
10.1103/PhysRevA.77.042320
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We provide an 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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页数：5
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