2018/06/30 by Dario Gatto, Antonella De Pasquale, Vittorio Giovannetti
Computer Science · Mathematics · Physics and Astronomy · #Action (physics) #Artificial intelligence #Computer science #Counterintuitive #Dissipative system #Generator (circuit theory) #Markov process #Mathematics #Noise (video) #Physics #Power (physics) #Quantum #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum decoherence #Quantum entanglement #Quantum mechanics #Squashed entanglement #Statistical physics #Statistics #Sudden death #Unitary state #quant-ph #stochastic dynamics and bifurcation
paper · pdf · doi:10.1103/physreva.99.032307
published as Phys. Rev. A 99, 032307 (2019) · 15 pages, 5 figures
arxiv created 2019/03/04 · openalex publication_date 2019/03/04 · arxiv updated 2019/03/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The entanglement survival time is defined as the maximum time a system which is evolving under the action of local Markovian, homogeneous-in-time noise is capable of preserving the entanglement it had at the beginning of the temporal evolution. In this paper we study how this quantity is affected by the interplay between the coherent preserving and dissipative contributions of the corresponding dynamical generator. We report the presence of a counterintuitive, nonmonotonic behavior in such a functional, capable of inducing sudden death of entanglement in models which, in the absence of unitary driving, are capable of sustaining entanglement for arbitrarily long times.