1 citations · 1 across the 4 of their papers we have counts for
10 papers
Hierarchy of saturation conditions for multiparameter quantum metrology bounds
Satoya Imai, Jing Yang, Luca Pezzè
The quantum Cramér-Rao (QCR) bound sets the ultimate local precision limit for unbiased multiparameter estimation. Unlike in the single-parameter case, however, its saturability i…
Entanglement in the symmetric subspace: mapping multipartite to bipartite states
Carlo Marconi, Satoya Imai
We propose a technique to investigate multipartite entanglement in the symmetric subspace. Our approach is to map an -qubit symmetric state onto a bipartite symmetric state of h…
Characterizing quantum channels from local-unitary invariants
Salwa Shaglel, Satoya Imai
We develop systematic frameworks for characterizing the entanglement properties of two-qubit channels beyond unitary settings. We introduce averaged local-unitary invariants, refer…
Semi-classical geometric tensor in multiparameter quantum information
Satoya Imai, Jing Yang, Luca Pezzè
The discrepancy between quantum distinguishability in Hilbert space and classical distinguishability in probability space is expressed by the gap between the quantum and classical…
Reference-frame-independent quantum metrology
Satoya Imai, Otfried Gühne, Géza Tóth
How can we perform a metrological task if only limited control over a quantum system is given? Here, we present systematic methods for conducting nonlinear quantum metrology in sce…
A geometric criterion for optimal measurements in multiparameter quantum metrology
Jing Yang, Satoya Imai, Luca Pezzè
Determining when the multiparameter quantum Cramér--Rao bound (QCRB) is saturable with experimentally relevant single-copy measurements is a central open problem in quantum metrol…