Effects of cavity-field statistics on atomic entanglement
Biplab Ghosh, A. S. Majumdar, N. Nayak · arXiv (Cornell University) · 2006
We study the entanglement properties of a pair of two-level atoms going through a cavity one after another. The initial joint state of two successive atoms that enter the cavity is unentangled. Interactions mediated by the cavity photon field result in the final two-atom state being of a mixed entangled type. We consider respectively various field statistics as in the Fock state field, thermal field, coherent state field and squeezed state field inside the cavity, and calculate the entanglement of formation, the well-known measure appropriate for mixed states, of the joint two-atom state as a function of the Rabi-angle $gt$. We present a detailed and comparitive study of two-atom entanglement for low and high mean photon number cases corresponding to the different cavity fields.