22 citations · 48 across the 14 of their papers we have counts for
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Geometric bounds on multiparameter Heisenberg scaling in optical metrology with limited squeezed resources
Atmadev Rai, Paolo Facchi, Vincenzo Tamma
The simultaneous estimation of multiple parameters is a central task in quantum metrology, distributed sensing, and the calibration of large photonic interferometers. A fundamental…
Attosecond delay metrology beyond the photon coherence time with spectrally resolved Hong-Ou-Mandel interferometry
Yingwen Zhang, Kyle Jordan, Duncan England +3
Hong-Ou-Mandel (HOM) interferometry enables delay estimation at the quantum precision limit but is traditionally constrained to path differences within the coherence time of the in…
Heisenberg-scaling characterization of a two-channel optical network via two-port homodyne detection
Atmadev Rai, Paolo Facchi, Vincenzo Tamma
We present a fully Gaussian and experimentally feasible scheme for the simultaneous estimation of the four real parameters that characterize a two-channel optical network. The sche…
Quantum-limited optical delay sensing across an enhanced dynamic range by frequency-resolving two-photon interference
Russell M. J. Brooks, Luca Maggio, Thomas Jaeken +4
Optical sensing schemes that rely on two-photon interference provide a powerful platform for precision metrology, although they are inherently constrained by a trade-off between dy…
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…
Quantum Interference of Distinguishable Photons Based on Spatially-Resolved Measurements
Miguel Angel Gonzalez, Alejandra Alarcón, Andres Camilo Quintero +5
We present experimental results demonstrating the quantum interference of two photons distinguishable in their transverse momenta, each entering the input ports of a balanced beam…
Ultimate quantum sensitivity in the 3D relative localisation of two single-photon emitters via two-photon interference
Luca Maggio, Vincenzo Tamma
We present a quantum sensing protocol for the simultaneous estimation of the difference in the localization parameters of two single-photon sources, paving the way to single-photon…
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…
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…
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…
Multi-parameter estimation of the state of two interfering photonic qubits
L. Maggio, D. Triggiani, P. Facchi +1
It is demonstrated a two-photon interfering technique based on polarization-resolved measurements for the simultaneous estimation with the maximum sensitivity achievable in nature…
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…
Zeptosecond-scale single-photon gyroscope
Fabrizio Sgobba, Danilo Triggiani, Vincenzo Tamma +4
This paper presents an all-fiber telecom-range optical gyroscope employing a spontaneous parametric down conversion crystal to produce ultra-low intensity thermal light by tracing-…
Fluorescence Lifetime Hong-Ou-Mandel Sensing
Ashley Lyons, Vytautas Zickus, Raúl Álvarez-Mendoza +5
Fluorescence Lifetime Imaging Microscopy in the time domain is typically performed by recording the arrival time of photons either by using electronic time tagging or a gated detec…