Quantum State Preparation via Asymptotic Completeness
Thomas Wellens, Andreas Buchleitner, Burkhard Kümmerer, Hans Maassen · Physical Review Letters · 2000
We demonstrate that any quantum state |chi> of a single mode radiation field can be prepared with arbitrarily high fidelity by interaction with a sequence of two-level atoms, prepared in a suitable initial state. No final state measurement of the atoms is needed.