3 papers
quant-ph2026
Resolving the phase space
Zdenek Hradil, Jaroslav Rehacek
We show that the effective resolution of quantum inference is determined by a sampling Gram operator that defines the experimentally accessible degrees of freedom and the reconstru…
quant-ph2026
Fundamental and operational limitations of Fisher-information-based quantum metrology
ZdenÄk Hradil, Jaroslav ÅeháÄek
Quantum-enhanced sensing is commonly benchmarked using the quantum Fisher information (QFI), often interpreted as a direct indicator of achievable precision. However, such an inter…
quant-ph2025
Robust quantum metrology with random Majorana constellations
A. Z. Goldberg, J. R. Hervas, Ãngel S Sanz +8
Even the most classical states are still governed by quantum theory. A number of physical systems can be described by their Majorana constellations of points on the surface of a sp…