Efficient quantum-state tomography for quantum-information processing using a two-dimensional Fourier-transform technique

Das, Ranabir ; Mahesh, T. S. ; Anil Kumar, (2003) Efficient quantum-state tomography for quantum-information processing using a two-dimensional Fourier-transform technique Physical Review A, 67 (6). 062304_1- 062304 _6. ISSN 1050-2947

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Official URL: http://pra.aps.org/abstract/PRA/v67/i6/e062304

Related URL: http://dx.doi.org/10.1103/PhysRevA.67.062304

Abstract

A method of quantum-state tomography for quantum-information processing is described. The method is based on the use of the Fourier-transform technique and involves detection of all the diagonal elements of the density matrix in a one-dimensional experiment and all the off-diagonal elements by a two-dimensional experiment. The method is efficient for a large number of qubits (≥5). The proposed method is outlined using a two-qubit system and demonstrated using simulations by tomographing arbitrary complex density matrices of two- and four-qubit systems.

Item Type:Article
Source:Copyright of this article belongs to American Physical Society.
ID Code:705
Deposited On:25 Sep 2010 05:03
Last Modified:16 May 2016 11:54

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