A disorder marker derived from central moments of disorder distributions classifies quantum probes and exhibits quadratic dependence on weak identical disorder strength, enabling estimation of maximum tolerable disorder directly from the clean probe Hamiltonian and initial state.
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Frequency dispersion in a random-interaction spherical oscillator model suppresses finite-temperature spin-glass ordering because the resulting correlation singularity violates the spherical constraint, but zero-temperature glassiness persists.
Multimode strong coupling in circuit QED lattices produces emergent band gaps, lifted degeneracies, and a four-wave mixing process dominated by localized flat-band modes.
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Robust quantum metrology using disordered probes
A disorder marker derived from central moments of disorder distributions classifies quantum probes and exhibits quadratic dependence on weak identical disorder strength, enabling estimation of maximum tolerable disorder directly from the clean probe Hamiltonian and initial state.
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A solvable model of noisy coupled oscillators with fully random interactions
Frequency dispersion in a random-interaction spherical oscillator model suppresses finite-temperature spin-glass ordering because the resulting correlation singularity violates the spherical constraint, but zero-temperature glassiness persists.
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Multimode Strong-Coupling Processes in Circuit QED Lattices
Multimode strong coupling in circuit QED lattices produces emergent band gaps, lifted degeneracies, and a four-wave mixing process dominated by localized flat-band modes.