Ultrafast Coherent Excitation of a Trapped Ion Qubit for Fast Gates and Photon Frequency Qubits
M. J. Madsen, David L. Moehring, Peter Maunz, R. N. Kohn, Luming Duan, Christopher R. Monroe · Physical Review Letters · 2006
We demonstrate ultrafast coherent excitation of an atomic qubit stored in the hyperfine levels of a single trapped cadmium ion. Such ultrafast excitation is crucial for entangling networks of remotely located trapped ions through the interference of photon frequency qubits, and is also a key component for realizing ultrafast quantum gates between Coulomb-coupled ions.