Quantum Discord in Two-Qubit System Constructed from the Yang–Baxter Equation

Quantum correlations among parts of a composite quantum system are a fundamental resource for several applications in quantum information. In general, quantum discord can measure quantum correlations. In that way, we investigate the quantum discord of the two-qubit system constructed from the Yang?Baxter Equation. The density matrix of this system is generated through the unitary Yang?Baxter matrix R?. The analytical expression and numerical result of quantum discord and geometric measure of quantum discord are obtained for the Yang?Baxter system. These results show that quantum discord and geometric measure of quantum discord are only connect with the parameter ?, which is the important spectral parameter in Yang?Baxter equation.