Local phase damping of single qubits sets an upper bound on the phase damping rate of entangled states

Details Local phase damping of single qubits sets an upper bound on the phase damping rate of entangled states Local phase damping of single qubits sets an upper bound on the phase damping rate of entangled states

2011-11-30

arxiv.org/abs/1111.7152v2

Physical Review A 85, 012110 (2012)

Physics

Quantum Physics

Scientific paper

10.1103/PhysRevA.85.012110

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.

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