Dynamics of three qubits interacting with electromagnetic field in a lossless cavity
Ekaterina Averchenko, Eugene K. Bashkirov · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2016
We investigated the entanglement dynamics in a quantum system consisting of three two-level atoms resonantly coupled to a single mode electromagnetic field. We considered the dynamics of the system under consideration for Fock and thermal initial cavity states. An explicit analytical solution of the system has been obtained and the entanglement has been studied with the help of the two-qubit negativity. It was also shown that for both initial cavity states the sudden death of two-qubit entanglement takes place.