Adiabatic creation of entangled states by a bichromatic field designed from the topology of the dressed eigenenergies
S. Guérin, Razmik G. Unanyan, Leonid P. Yatsenko, Hans Rudolf Jauslin · Physical Review A · 2002
Preparation of entangled pairs of coupled two-state systems driven by a bichromatic external field is studied. We use a system of two coupled spin-$\frac{1}{2}$ particles that can be translated into a three-state ladder model whose intermediate state represents the entangled state. We show that this entangled state can be prepared in a robust way with appropriate fields. Their frequencies and envelopes are derived from the topological properties of the model.