The quantum Fisher information is reformulated as the connected symmetrized covariance of a time-integrated action deformation or as an insertion of the action derivative in the propagator within a path integral framework.
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quant-ph 2years
2026 2verdicts
UNVERDICTED 2representative citing papers
Resonance between on-site interactions and gravitational gradient in lattice BECs amplifies quantum Fisher information for gravimetry in the localized phase.
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Path Integral Approach to Quantum Fisher Information
The quantum Fisher information is reformulated as the connected symmetrized covariance of a time-integrated action deformation or as an insertion of the action derivative in the propagator within a path integral framework.
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Precision gravimetry via harnessing interaction-induced resonances in optical lattices
Resonance between on-site interactions and gravitational gradient in lattice BECs amplifies quantum Fisher information for gravimetry in the localized phase.