Abstract
An operational procedure is given for determining experimentally, in principle at least, the Wigner function for an ensemble of particles. This manner of "measuring" a quantum state, whether pure or mixed, via its Wigner function, seems the simplest possible, and closely parallels the method one might use in classical mechanics to determine a (true) phase-space probability density.
- Received 11 February 1985
DOI:https://doi.org/10.1103/PhysRevLett.55.2745
©1985 American Physical Society