Disentanglement of atom–photon via quantum interference in driven three-level atoms

S. Swain, Z. Ficek

Sihua Yuan, J.-Y. Gao

Mohammad Abazari, Ali Mortezapour, Mohammad Mahmoudi +1 more

We investigate the dynamical behavior of the atom-photon entanglement in a V-type three-level quantum system using the atomic reduced entropy. It is shown that an atom and photons are entangled at the steady-state; however disentanglement can also be achieved in an special condition. It is demonstrated that in the presence of quantum interference induced by spontaneous emission, the reduced entropy and the atom-photon entanglement are phase-dependent. A non-stationary solution is also obtained when the quantum interference due to the spontaneous emission is completely included.

Łukasz Derkacz, Lech Jakóbczyk

We consider a pair of three-level atoms interacting with the vacuum. The process of disentanglement due to spontaneous emission and the role of quantum interference between principal transitions in this process, are analyzed. We show that the presence of interference can slow down disentanglement. In the limit of maximal interference, some part of initial entanglement can survive.

J. Beugnon, M. P. A. Jones, J. Dingjan +4 more