Direct experimental visualization of atomic and electron dynamics with attosecond pulses

We illustrate how attosecond light pulses can be used directly in mapping out the time dependence of the motion of atoms in a small molecule, as well as of the correlated motion of two excited electrons in an atom. For simple molecules such as H2 and D2, we show that the vibrational wave packet can be mapped out very accurately, including details due to the broadening and interference. For doubly excited states of a helium atom, we show that the time-dependent correlated motion between the two electrons can be mapped via double ionization with attosecond pulses.