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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2 Pith papers cite this work. Polarity classification is still indexing.
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quant-ph 2years
2026 2verdicts
UNVERDICTED 2representative citing papers
Rotational quantum tunneling of a pinned-magnetization nano-particle in a superconducting trap is protected against rest-gas decoherence by near-perfect axial symmetry and lies within experimentally accessible parameter ranges.
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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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Rotational Quantum Tunneling of a Magnetic Dipole in a Superconducting Trap
Rotational quantum tunneling of a pinned-magnetization nano-particle in a superconducting trap is protected against rest-gas decoherence by near-perfect axial symmetry and lies within experimentally accessible parameter ranges.