885 citations · 7.7k across the 102 of their papers we have counts for
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Metrology with Unknown Detectors
Matteo Altorio, Marco G. Genoni, Fabrizia Somma +1
The best possible precision is one of the key figures in metrology, but this is established by the exact response of the detection apparatus, which is often unknown. There exist te…
Photonic Maxwell's demon
Mihai D. Vidrighin, Oscar Dahlsten, Marco Barbieri +3
We report an experimental realisation of Maxwell's demon in a photonic setup. We show that a measurement at the single-photon level followed by a feed-forward operation allows the…
Weak measurements and the joint estimation of phase and phase diffusion
Matteo Altorio, Marco G. Genoni, Mihai D. Vidrighin +2
Weak measurements offer the possibility of tuning the information acquired on a system, hence the imposed disturbance. This suggests that it could be a useful tool for multi-parame…
Observing optical coherence across Fock layers with weak-field homodyne detectors
Gaia Donati, Tim J. Bartley, Xian-Min Jin +4
Quantum properties of optical modes are typically assessed by observing their photon statistics or the distribution of their quadratures. Both particle- and wave-like behaviours de…
Two-photon quantum walk in a multimode fiber
Hugo Defienne, Marco Barbieri, Ian A. Walmsley +2
Multi-photon propagation in connected structures - a quantum walk - offers the potential for simulating complex physical systems and provides a route to universal quantum computati…
Quantum enhanced estimation of optical detector efficiencies
Marco Barbieri, Animesh Datta, Tim J. Bartley +3
Quantum mechanics establishes the ultimate limit to the scaling of the precision on any parameter, by iden- tifying optimal probe states and measurements. While this paradigm is, a…