Power-law kinetic grading in a 1D lattice drives a localization transition at alpha equals zero with diverging length, enabling critical enhancement of quantum Fisher information for parameter estimation.
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Power-law-graded Ising interactions stabilize discrete time crystals in Floquet-driven spin-1/2 chains, yielding superlinear energy storage as a quantum battery and superextensive quantum Fisher information for timing sensing beyond the Heisenberg limit.
Long-range non-Hermitian XX spin chains show enhanced time and size scaling of dynamical quantum Fisher information for parameter estimation compared to short-range and Hermitian cases, with identical scaling at criticality for ground-state probes.
Interacting BECs in tilted optical lattices show localization-delocalization transitions whose scaling can be harnessed for quantum critical sensing of gradients.
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Localization from Infinitesimal Kinetic Grading: Finite-size Scaling, Kibble-Zurek Dynamics and Applications in Sensing
Power-law kinetic grading in a 1D lattice drives a localization transition at alpha equals zero with diverging length, enabling critical enhancement of quantum Fisher information for parameter estimation.
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Power-law-graded Ising Interactions Stabilize Time Crystals Realizing Quantum Energy Storage and Sensing
Power-law-graded Ising interactions stabilize discrete time crystals in Floquet-driven spin-1/2 chains, yielding superlinear energy storage as a quantum battery and superextensive quantum Fisher information for timing sensing beyond the Heisenberg limit.
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Quantum-enhanced sensing from the interplay of long-range interactions and non-Hermiticity
Long-range non-Hermitian XX spin chains show enhanced time and size scaling of dynamical quantum Fisher information for parameter estimation compared to short-range and Hermitian cases, with identical scaling at criticality for ground-state probes.
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Tilt-Induced Localization in Interacting Bose-Einstein Condensates for Quantum Sensing
Interacting BECs in tilted optical lattices show localization-delocalization transitions whose scaling can be harnessed for quantum critical sensing of gradients.