Ultimate precision bounds for multiparameter Markovian noise metrology show average variance scaling as Ω(1/(T R²)) with Heisenberg scaling in dissipative channels R when using entangled probes and high-rank signal correlations, attainable via rapid prepare-and-measure protocols.
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Lindblad, On the generators of quantum dynamical semigroups, Commun
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In a minimal non-reciprocal graphene model, quantum capacitance scales as (1 - β²)^{-1} near the exceptional point, offering an equilibrium thermodynamic signature of non-Hermiticity.
A nonperturbative bound on evolution distance yields explicit upper bounds on errors of the rotating-wave and secular approximations in dissipative open quantum systems.
Pseudomode elimination works for nonlinearly intercoupled modes in cQED whenever the eliminated sector's self-energy on the retained subsystem is rational, enabling finite damped auxiliaries independent of retained nonlinearities.
Time evolution of genuine multipartite negativity in the open Kitaev quantum spin liquid shows persistence in loopy subregions in Markovian regime and at higher temperatures in non-Markovian regime.
Derives Lindblad master equation for spacetime-noise decoherence with Gamma proportional to E^{-4} and applies it to damped neutrino flavor oscillations.
Physics-informed quantum neural networks trained on noisy measurements can construct nontrivial decision boundaries to classify quantum states via order parameters and are suited for NISQ hardware due to links with Markovian open many-body systems.
Language generation requires dissipative quantum dynamics with non-local aggregation, not conservation laws, framing it as dissipative quantum field theory.
Local quantum memory criteria applied via matrix product operator methods show that single-intervention process tensors generally predict quantum memory at low temperatures in spin-boson models, while dynamical maps detect it for resonant environments at short times.
In Markovian open quantum systems with bistability, noise-induced stochastic switching limits relaxation and follows an Arrhenius law with inverse system size as effective temperature, distinct from deterministic slow relaxation due to a small Liouvillian gap.
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Precision Limits of Multiparameter Markovian-Noise Metrology
Ultimate precision bounds for multiparameter Markovian noise metrology show average variance scaling as Ω(1/(T R²)) with Heisenberg scaling in dissipative channels R when using entangled probes and high-rank signal correlations, attainable via rapid prepare-and-measure protocols.
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Thermodynamic signatures of non-Hermiticity in Dirac materials via quantum capacitance
In a minimal non-reciprocal graphene model, quantum capacitance scales as (1 - β²)^{-1} near the exceptional point, offering an equilibrium thermodynamic signature of non-Hermiticity.
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Rotating-Wave and Secular Approximations for Open Quantum Systems
A nonperturbative bound on evolution distance yields explicit upper bounds on errors of the rotating-wave and secular approximations in dissipative open quantum systems.
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An extensive theory of nonlinearly intercoupled pseudomodes for noise model reduction in circuit QED
Pseudomode elimination works for nonlinearly intercoupled modes in cQED whenever the eliminated sector's self-energy on the retained subsystem is rational, enabling finite damped auxiliaries independent of retained nonlinearities.
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Fate of entanglement in open quantum spin liquid: Time evolution of its genuine multipartite negativity upon sudden coupling to a dissipative bosonic environment
Time evolution of genuine multipartite negativity in the open Kitaev quantum spin liquid shows persistence in loopy subregions in Markovian regime and at higher temperatures in non-Markovian regime.
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Decoherence from quantum spacetime noise: An open-systems framework with application to neutrino oscillations
Derives Lindblad master equation for spacetime-noise decoherence with Gamma proportional to E^{-4} and applies it to damped neutrino flavor oscillations.
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Getting large-scale quantum neural networks ready for quantum hardware
Physics-informed quantum neural networks trained on noisy measurements can construct nontrivial decision boundaries to classify quantum states via order parameters and are suited for NISQ hardware due to links with Markovian open many-body systems.
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Path Integral Solution for Dissipative Generative Dynamics
Language generation requires dissipative quantum dynamics with non-local aggregation, not conservation laws, framing it as dissipative quantum field theory.
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Verifying Quantum Memory in the Dynamics of Spin Boson Models
Local quantum memory criteria applied via matrix product operator methods show that single-intervention process tensors generally predict quantum memory at low temperatures in spin-boson models, while dynamical maps detect it for resonant environments at short times.
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Switching Dynamics of Metastable Open Quantum Systems
In Markovian open quantum systems with bistability, noise-induced stochastic switching limits relaxation and follows an Arrhenius law with inverse system size as effective temperature, distinct from deterministic slow relaxation due to a small Liouvillian gap.
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