Dynamical control of population and entanglement for open Λ-type atoms by engineering the environment
Project supported by the National Natural Science Foundation of China (Grant No. 11275064), the Specialized Research Fund for the Doctoral Program of Higher Education, China (Grant No. 20124306110003), and the Construct Program of the National Key Discipline, China.
(a) A Λ-type atom embedded in a vacuum cavity with decay rate λ; the latter may be described by a zero-temperature Lorentzian environment. (b) Energy levels of the Λ-type atom with ground, meta-stable, and excited states (|1⟩, |2⟩, and |3⟩), respectively. The transitions |1〉 ↔ |3〉 and |2〉 ↔ |3〉 are allowed, but the transition between |1⟩ and |2⟩ is forbidden.
