46 citations · 306 across the 24 of their papers we have counts for
19 papers · 1 filter
Metrology of quantum imaging schemes
Emma Brambila, Giacomo Sorelli
We compare the performance of quantum imaging schemes based on spatially correlated photon pairs by formulating them as quantum multiparameter estimation problems, in which the obj…
Ultimate resolution limits in coherent anti-Stokes Raman scattering imaging
Giacomo Sorelli, Manuel Gessner, Frank Schlawin
Coherent anti-Stokes Raman scattering is a widely used imaging technique that provides chemical contrast without the need for labels, making it an extremely valuable tool in physic…
Estimation of multiple parameters encoded in the modal structure of light
Alexander Boeschoten, Giacomo Sorelli, Manuel Gessner +2
We investigate the problem of estimating simultaneously multiple parameters encoded in the shape of the modes on which the light is expanded. For this, we generalize the mode-encod…
Ultra-sensitive separation estimation of optical sources
Clémentine Rouvière, David Barral, Antonin Grateau +4
Historically, the resolution of optical imaging systems was dictated by diffraction, and the Rayleigh criterion was long considered an unsurpassable limit. In superresolution micro…
Practical tests for sub-Rayleigh source discriminations with imperfect demultiplexers
Konrad Schlichtholz, Tomasz Linowski, Mattia Walschaers +3
Quantum-optimal discrimination between one and two closely separated light sources can be achieved by ideal spatial-mode demultiplexing, simply monitoring whether a photon is detec…
Metrological detection of entanglement generated by non-Gaussian operations
David Barral, Mathieu Isoard, Giacomo Sorelli +3
Entanglement and non-Gaussianity are physical resources that are essential for a large number of quantum-optics protocols. Non-Gaussian entanglement is indispensable for quantum-co…
Application range of crosstalk-affected spatial demultiplexing for resolving separations between unbalanced sources
Tomasz Linowski, Konrad Schlichtholz, Giacomo Sorelli +4
Superresolution is one of the key issues at the crossroads of contemporary quantum optics and metrology. Recently, it was shown that for an idealized case of two balanced sources,…
Quantum limits for resolving Gaussian sources
Giacomo Sorelli, Manuel Gessner, Mattia Walschaers +1
We determine analytically the quantum Cramér-Rao bound for the estimation of the separation between two point sources in arbitrary Gaussian states. Our analytical expression is val…
Gaussian quantum metrology for mode-encoded parameters
Giacomo Sorelli, Manuel Gessner, Nicolas Treps +1
Quantum optical metrology aims to identify ultimate sensitivity bounds for the estimation of parameters encoded into quantum states of the electromagnetic field. In many practical…
Resolving Mutually Coherent Bright Point-Sources
Ilya Karuseichyk, Giacomo Sorelli, Manuel Gessner +2
We analyze the problem of resolving two point-sources in the case of mutually coherent sources with arbitrary quantum statistics, mutual phase, relative and absolute intensity. We…
Moment-based superresolution: Formalism and applications
Giacomo Sorelli, Manuel Gessner, Mattia Walschaers +1
Sensitivity limits are usually determined using the Cramér-Rao bound. Recently this approach has been used to obtain the ultimate resolution limit for the estimation of the separat…
Optimal observables and estimators for practical superresolution imaging
Giacomo Sorelli, Manuel Gessner, Mattia Walschaers +1
Recent works identified resolution limits for the distance between incoherent point sources. However, it remains unclear how to choose suitable observables and estimators to reach…
Detecting a target with quantum entanglement
Giacomo Sorelli, Nicolas Treps, Frederic Grosshans +1
In the last decade a lot of research activity focused on the use of quantum entanglement as a resource for remote target detection, i.e. on the design of a quantum radar. The liter…
Entanglement of truncated quantum states
Giacomo Sorelli, Vyacheslav N. Shatokhin, Filippus S. Roux +1
We investigate the impact of Hilbert-space truncation upon the entanglement of an initially maximally entangled bipartite quantum state, after propagation under an enta…
Universal entanglement losses induced by angular uncertainty
Giacomo Sorelli, Vyacheslav N. Shatokhin, Andreas Buchleitner
We study the diffraction of two maximally entangled qubits encoded into spatial modes of light with orbital angular momenta , on angular apertures. Exploiting the un…
Entanglement protection of high-dimensional states by adaptive optics
Giacomo Sorelli, Nina Leonhard, Vyacheslav N. Shatokhin +2
We study the potential of adaptive optics (AO) to protect entanglement of high-dimensional photonic orbital-angular-momentum (OAM) states against turbulence-induced phase distortio…
Diffraction-induced entanglement loss of orbital-angular-momentum states
Giacomo Sorelli, Vyacheslav N. Shatokhin, Filippus S. Roux +1
We provide an analytical expression for the entanglement decay of initially maximally entangled orbital angular momentum bi-photon states, when scattered off an obstruction. We sho…
Protecting entanglement of twisted photons by adaptive optics
Nina Leonhard, Giacomo Sorelli, Vyacheslav N. Shatokhin +2
We study the efficiency of adaptive optics (AO) correction for the free-space propagation of entangled photonic orbital-angular-momentum (OAM) qubit states, to reverse moderate atm…
Fast and optimal generation of entanglement in bosonic Josephson junctions
Giacomo Sorelli, Manuel Gessner, Augusto Smerzi +1
We use an exact quantum phase model to study the dynamical generation of particle-entanglement in a bosonic Josephson junction composed by two coupled and interacting Bose-Einstein…