51 citations · 407 across the 36 of their papers we have counts for
7 papers · 1 filter
Quantum Polarimetry
Aaron Z. Goldberg
Polarization is one of light's most versatile degrees of freedom for both classical and quantum applications. The ability to measure light's state of polarization and changes there…
Quantumness Beyond Entanglement: The Case of Symmetric States
Aaron Z. Goldberg, Markus Grassl, Gerd Leuchs +1
It is nowadays accepted that truly quantum correlations can exist even in the absence of entanglement. For the case of symmetric states, a physically trivial unitary transformation…
From polarization multipoles to higher-order coherences
Aaron Z. Goldberg, Andrei B. Klimov, Hubert de Guise +3
We demonstrate that the multipoles associated with the density matrix are truly observable quantities that can be unambiguously determined from intensity moments. Given their corre…
Taming singularities of the quantum Fisher information
Aaron Z. Goldberg, José L. Romero, Ángel S. Sanz +1
Quantum Fisher information matrices (QFIMs) are fundamental to estimation theory: they encode the ultimate limit for the sensitivity with which a set of parameters can be estimated…
Breaking the limits of purification: Postselection enhances heat-bath algorithmic cooling
Aaron Z. Goldberg, Khabat Heshami
Quantum technologies require pure states, which are often generated by extreme refrigeration. Heat-bath algorithmic cooling is the theoretically optimal refrigeration technique: it…
How squeezed states both maximize and minimize the same notion of quantumness
Aaron Z. Goldberg, Khabat Heshami
Beam splitters are routinely used for generating entanglement between modes in the optical and microwave domains, requiring input states that are not convex combinations of coheren…
Intrinsic Sensitivity Limits for Multiparameter Quantum Metrology
Aaron Z. Goldberg, Luis L. Sánchez-Soto, Hugo Ferretti
The quantum Cramér-Rao bound is a cornerstone of modern quantum metrology, as it provides the ultimate precision in parameter estimation. In the multiparameter scenario, this bound…