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Robustness of Interferometric Power to Sudden Death
D. Zhu, F. L. Zhang, J. L. Chen·May 13, 2024·DOI: 10.1142/S021773232450158X
Quantum Physics
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Abstract
We study the dissipative dynamics of interferometric power as a discordlike measure in Markovian environments, such as dephasing, depolarizing, and generalized amplitude damping. Moreover, we compare the dynamics of interferometric power and entanglement by choosing proper initial conditions. Our study shows that in all cases where the sudden death of entanglement appears, interferometric power decays asymptotically. Therefore, quantum metrology based on interferometric power is more robust than entanglement.