Abstract
I derive an inequality in which the phase damping rates of single qubits set an upper bound for the phase damping rate of entangled states of many qubits. The derivation is based on two assumptions: first, that the phase damping can be described by a dissipator in Lindblad form and, second, that the phase damping preserves the population of qubit states in a given basis.
- Received 3 November 2011
DOI:https://doi.org/10.1103/PhysRevA.85.012110
©2012 American Physical Society