Entanglement dynamics between a pair of two-level atoms and cavity fields connected by an optical fiber
Sayed Ali Sina Musavi
In this study, we theoretically investigate a system composed of two isolated two-level atoms, each confined within an independent single-mode optical cavity. The cavities are coherently coupled via an optical fiber, enabling photon-mediated interaction between the two subsystems. Each cavity sustains a single-mode quantized electromagnetic field, and each atom couples exclusively to the field within its respective cavity. We analyze the time dependent entanglement dynamics, exploring both atom-atom and cavity-field bipartite entanglement under this hybrid interaction framework. To quantify entanglement, we employ concurrence as the measurement metric. The effects of the atoms' initial states and the optical fiber’s coupling strength on both atom-atom and field-field entanglement are analyzed. Numerical results reveal that when the coupling strength of the optical fiber is close to zero, no entanglement is observed between either the atoms or the fields. However, as the fiber coupling strength increases, entanglement emerges and exhibits collapse and revival behavior over time.
International Journal of Natural Sciences and Mathematics•Aug 24, 2026•0 citations