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Holevo Cramér-Rao bound: How close can we get without entangling measurements?
Aritra Das, Lorcán O. Conlon, Jun Suzuki +3
In multi-parameter quantum metrology, the resource of entanglement can lead to an increase in efficiency of the estimation process. Entanglement can be used in the state preparatio…
quant-ph2024
Role of the extended Hilbert space in the attainability of the Quantum Cramér-Rao bound for multiparameter estimation
Lorcan O. Conlon, Jun Suzuki, Ping Koy Lam +1
The symmetric logarithmic derivative Cramér-Rao bound (SLDCRB) provides a fundamental limit to the minimum variance with which a set of unknown parameters can be estimated in an un…