We discuss the state tomography of a fixed qubit (a spin-1/2 target particle), which is in general in a mixed state, through one-dimensional scattering of a probe qubit off the target. Two strategies are presented by making use of different degrees of freedom of the probe, i.e. spin and momentum. Remarkably, the spatial degree of freedom of the probe can be utilized for optimizing the tomographic schemes.
|Physical Review A - Atomic, Molecular, and Optical Physics
|Published - 2009 Nov 18
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics