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

Das, Ranabir and Mahesh, TS and Kumar, Anil (2003) Efficient quantum-state tomography for quantum-information processing using a two-dimensional Fourier-transform technique. In: Physical Review A (Atomic, Molecular, and Optical Physics), 67 (6). pp. 62304-1.

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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:	Journal Article
Additional Information:	Copyright for this article belongs to American Physical Society (APS).
Department/Centre:	Division of Chemical Sciences > Sophisticated Instruments Facility Division of Physical & Mathematical Sciences > Physics
Date Deposited:	10 Dec 2004
Last Modified:	19 Sep 2010 04:12
URI:	http://eprints.iisc.ernet.in/id/eprint/289

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