State tomography for two qubits using reduced densities

Abstract

The optimal state determination (or tomography) is studied for a composite system of two qubits when measurements can be performed on one of the qubits and interactions of the two qubits can be implemented. The goal is to minimize the number of interactions to be used. The algebraic method applied in the paper leads to an extension of the concept of mutually unbiased measurements.

8 pages LATEX

References in corpus (7)

• Experimental Quantum State Tomography of Optical Fields and Ultrafast Statistical Sampling
• Unknown Quantum States and Operations, a Bayesian View
• Minimal qubit tomography
• Complementarity and the uncertainty relations
• Programmable quantum state discriminators with simple programs
• A concise guide to complex Hadamard matrices
• Mutually Unbiased Bases and Orthogonal Decompositions of Lie Algebras

Cited by in corpus (4)

• Complementarity in quantum systems
• Point Estimation of States of Finite Quantum Systems
• Complementary reductions for two qubits
• Complementarity and the algebraic structure of 4-level quantum systems