Complete population transfer in a degenerate three-state atom

A General Method for Complete Population Transfer in Degenerate Systems

A simple theoretical solution to the design of a control field that generates complete population transfer from an initial state, via N nondegenerate intermediate states, to one arbitrary member of M (M ≤ N) degenerate states is constructed. The full control field exploits an (M + N − 1)node null adiabatic state, created by designing the relative phases and amplitudes of the component fields th...

Complete quantum control of the population transfer branching ratio between two degenerate target states.

A five-level four-pulse phase-sensitive extended stimulated Raman adiabatic passage scheme is proposed to realize complete control of the population transfer branching ratio between two degenerate target states. The control is achieved via a three-node null eigenstate that can be correlated with an arbitrary superposition of the target states. Our results suggest that complete suppression of th...

Reversible state transfer between light and a single trapped atom.

We demonstrate the reversible mapping of a coherent state of light with a mean photon number (-)n approximately equal to 1.1 to and from the hyperfine states of an atom trapped within the mode of a high-finesse optical cavity. The coherence of the basic processes is verified by mapping the atomic state back onto a field state in a way that depends on the phase of the original coherent state. Ou...

Converting two-atom singlet state into three-atom singlet state via quantum Zeno dynamics

An approach is presented for converting a two-atom singlet state into a three-atom singlet state based on the quantum Zeno dynamics induced by continuous coupling. The scheme can be achieved within one step through appropriately regulating the Rabi frequencies of the classical fields. The effects of decoherence such as atomic spontaneous emission and the loss of cavity are also considered in vi...

Complete Androgen Insensitivity Syndrome in Three Sisters