Wu, L.A., Yu, C.X. and Segal, D. (2013) Exact Dynamics of Interacting Qubits in a Thermal Environment Results beyond the Weak Coupling Limit. New Journal of Physics, 15, Article ID: 023044.

has been cited by the following article:

• TITLE: Tailoring Quantum Correlations of a Coupled Central Two Qubits Soaked in a Finite Temperature Antiferromagnetic Environment with Frequency Gap

  AUTHORS: Lukong Cornelius Fai, Ngwa Engelbert Afuoti, Georges Collince Fouokeng, Jules Casimir Ngana Kuetche, Martin Tchoffo

  KEYWORDS: Anti-Ferromagnetic Lattice, Anisotropy Field, Magnetic Field, Quantum Correlations, Central Two Qubits

  JOURNAL NAME: Journal of Quantum Information Science, Vol.4 No.4, December 18, 2014

  ABSTRACT: We revisit the quantum features of an anti-ferromagnetic (AF) spin environment at finite temperature with gap in its frequency spectrum, on the dynamics quantum correlations of a coupled central two qubits system with Dzyaloshinskii-Moriya (DM) interaction, prepared in two entangled Bell states. Using entanglement and quantum discord as quantum meters of decoherence, the prepared entangled states are classified as robust or fragile relative to the degree of information leakage to the AF environment. By tailoring the size of the frequency gap, anisotropy field strength and induced field, due to system AF spin environment coupling, size of the AF environment and DM interaction parameter, a decoherence-free sub-space can be accessed for efficient execution of quantum protocols encoded in the entangled states.