Abstract
We present a model, motivated by the criterion of reality put forward by Einstein, Podolsky, and Rosen and supplemented by classical communication, which correctly reproduces the quantum-mechanical predictions for measurements of all products of Pauli operators on an -qubit GHZ state (or “cat state”). The employed by our model are shown to be optimal for the allowed set of measurements, demonstrating that the required communication overhead scales linearly with . We formulate a connection between the generation of the local values utilized by our model and the stabilizer formalism, which leads us to conjecture that a generalization of this method will shed light on the content of the Gottesman-Knill theorem.
- Received 1 June 2005
DOI:https://doi.org/10.1103/PhysRevA.72.032305
©2005 American Physical Society