Tomographic Discord and Quantum Correlations for System of Qubits

2013/06/17 by V. I. Manko, Manko, V. I., Anatoli Yurkevich +1
Physics and Astronomy · #FOS: Physical sciences #Quantum Physics (quant-ph) #quant-ph

paper · pdf · doi:10.48550/arxiv.1306.4039

5 pages

arxiv created 2013/06/17 · arxiv updated 2013/06/19

Abstract

The difference of quantum mutual information for bipartite system of qubits and minimum taken with respect to local unitary transformation group is introduced as a characteristic of quantum correlations.The two qubits example (and specifically the two qubits X state) is studied in some details.

Related

• Unitary invariant discord as a measure of bipartite quantum correlations in an N-qubit quantum system
• Measuring Bipartite Quantum Correlations of an Unknown State
• Geometric quantum discord for two-qubit X-states
• Quantum discord for two-qubit X-states: A comprehensive approach inspired by classical polarization optics
• Exploiting quantum discord for analyzing complex systems: two-state Markov-binary