Abstract:
Entanglement is a paramount attribute, used as a resource for several quantum applica tions. However, the desire to nip disentanglement in the bud is the topic to conversation
among researchers. In this work, the creation of entanglement and steady state concur rence is reviewed for the quantum system out of thermal equilibrium and further the
finite-time disentanglement is examined. To this aim, the Markovian master equation
approach is employed to find the rate equations and Wootter’s concurrence to analyze
out-of-thermal equilibrium entanglement dynamics for coupled basis. The effect of
super- and sub-radiant rates on entanglement sudden death is examined for different
classes of X-states. It is found that the shorter dark period is achieved at a higher
transition rate of a super-radiant state. Further the potentiality of superdense coding
is examined and the dependence of superdense coding capacity on initial states for
different ratios of sub- to super-radiant transition rates. The validity of dense coding
is also analyzed for different probability amplitudes and it is perceived that maximally
entangled states show the highest degree of coding capacity. This approach further
allows us to analyze the applications of quantum information technologies
