Entanglement dynamics for two-level quantum systems coupled with massive scalar fields

摘要: Abstract Entanglement is essential in quantum information science. Typically, the inevitable coupling between systems and environment inhibits entanglement from being created long-distance subsystems maintained for a long time. In this paper, we show that when composed of bath massive scalar fields, region separation within which can be generated significantly enlarged, decay rate slowed down compared with those massless case, mass field m smaller than but close to transition frequency qubits ω. When ≥ ω , initial an arbitrarily time, regardless environmental temperature. Therefore, principle, it possible achieve generation long-lived by manipulating energy level spacing two-level respect field.