Reading the phase of a Raman excitation with a multi-state atomic interferometer.

Atomic memories for flying photonic qubits are an essential ingredient for many applications like e.g. quantum repeaters.

Experimental realization of quantum zeno dynamics.

It is generally impossible to probe a quantum system without disturbing it. However, it is possible to exploit the back action of quantum measurements and strong couplings to tailor and protect the coherent evolution of a quantum system. This is a profound and counterintuitive phenomenon known as quantum Zeno dynamics.