Abstract
We reconstruct the density operator of the center-of-mass motion of an ion stored in a Paul trap by mapping the dynamics of the motion onto the internal dynamics of the ion. Our technique takes into account the explicit time dependence of the trap potential, operates outside the Lamb-Dicke limit, and is not restricted to pure states. We demonstrate the feasibility of this method using the example of a damped Schrödinger cat state.
- Received 25 April 1996
DOI:https://doi.org/10.1103/PhysRevLett.77.2198
©1996 American Physical Society