6 papers
Multiphoton Hong-Ou-Mandel Interference Enables Superresolution of Bright Thermal Sources
Aiman Khan, Danilo Triggiani, Vincenzo Tamma
We present a quantum optical scheme for imaging transversely displaced thermal sources of arbitrary intensities by employing multiphoton interference with a reference single-photon…
Quantum-limited estimation of the frequency shift between two interfering photons by time sampling of their quantum beats
Luca Maggio, Danilo Triggiani, Paolo Facchi +1
We present a sensing scheme for estimating the frequency difference of two non-entangled photons. The technique consists of time-resolving sampling measurements at the output of a…
Multiparameter quantum metrology at Heisenberg scaling for an arbitrary two-channel linear interferometer with squeezed light
Atmadev Rai, Danilo Triggiani, Paolo Facchi +1
We present a framework for simultaneously estimating all four real parameters of a general two-channel unitary U(2) with Heisenberg-scaling precision. We derive analytical expressi…
Heisenberg-scaling sensitivity in the estimation of two parameters in a Mach-Zehnder interferometer
Atmadev Rai, Danilo Triggiani, Paolo Facchi +1
Achieving the ultimate quantum precision in the estimation of multiple physical parameters simultaneously is a challenge in quantum metrology due to fundamental limitations and exp…
Momentum-entangled two-photon interference for quantum-limited transverse-displacement estimation
Danilo Triggiani, Vincenzo Tamma
We propose a scheme achieving the ultimate quantum precision for the estimation of the transverse displacement between two interfering photons. Such a transverse displacement could…
Superresolution imaging of two incoherent sources via two-photon interference sampling measurements in the transverse momenta
Salvatore Muratore, Danilo Triggiani, Vincenzo Tamma
The Rayleigh's criterion infamously imposes a minimum separation between two incoherent sources for them to be distinguishable via classical methods. In this work, we demonstrate t…