A general perturbation theory for local quantum uncertainty is derived and applied in linear response to show that driving frequency can resonantly enhance quantum discord without entanglement in a two-spin Heisenberg model.
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Variational perturbation theory extends the radius of convergence for steady-state calculations in open quantum systems and replaces pseudo-inverse computations with LU decomposition or Krylov recycling.
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General perturbation theory for local quantum uncertainty and its formulation in the linear-response regime
A general perturbation theory for local quantum uncertainty is derived and applied in linear response to show that driving frequency can resonantly enhance quantum discord without entanglement in a two-spin Heisenberg model.
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Variational Perturbation Theory in Open Quantum Systems for Efficient Steady State Computation
Variational perturbation theory extends the radius of convergence for steady-state calculations in open quantum systems and replaces pseudo-inverse computations with LU decomposition or Krylov recycling.