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In this work, we study the quantum Fisher information (QFI) per particle ofan open (particles can enter and leave the system) and dissipative (far fromthermodynamical equilibrium) steady state system of two qubits in noisychannels. We concentrate on two noisy channels these are dephasing andnon-dephasing channels. We will show that under certain conditions QFI perparticle is slightly greater than 1 for both systems. This means that bothsystems can be slightly entangled.

On Negativity and Quantum Fisher Information of an Open and Noisy System in the Steady State