Comparing concurrence and negativity in time-dependent ionic-phononic system with fifteen dimensional density matrix
Rasim Dermez · Journal of Physics Conference Series · 2016
It is solved a time-dependent Hamiltonian using a unitary transformation method which Λ( t ) type is used to engineer a cascade Ξ scheme interaction between the vibrational phonons and trapped three-level ion. Quantum entanglement is characterized by comparing concurrence and negativity of the time-dependent ionic-phononic system. In this quantum system, we obtain that the amount of concurrence can be tuned between 0 and 0.99 while the amount of negativity changes between 0 and 0.49.