350 citations · 856 across the 40 of their papers we have counts for
23 papers · 1 filter
Quantum tomography of inelastic electron scattering \emph{via} orbital angular momentum states
Amir H. Tavabi, Alessio D'Errico, Paolo Rosi +10
The physical properties of a quantum system, whether pure or mixed, are described fully by its density matrix. Recovery of the density matrix through projective measurements -- ref…
Single-acquisition tomography of photonic qubits with structured media
Francesco Di Colandrea, Yingwen Zhang, John Grace +3
Quantum state tomography is an essential tool for characterizing quantum systems and underpins nearly every experimental realization of quantum technologies. Conventional tomograph…
Single-Image Entanglement Verification with Spatially Encoded Measurement Contexts
Nazanin Dehghan, Alessio D'Errico, Yingwen Zhang +3
Entangled photon pairs produced by spontaneous parametric down-conversion exhibit rich spatial entanglement structure that is often difficult to probe with conventional measurement…
Three-fold coincidence by stimulated parametric down-conversion
Yishai Klein, Alessio D'Errico, Farid Ghobadi +4
Parametric down-conversion is a widely used source of nonclassical light in quantum optics and photonic quantum technologies. While stimulated parametric down-conversion with stron…
Contrast enhanced imaging through weakly scattering media with spatially entangled photons
Alessio D'Errico, James Hubble, Rojan Abolhassani +4
Improving the image contrast of objects immersed in weakly scattering media can be achieved using various strategies. One common approach is to reject events associated with scatte…
Imaging Walk-Off Driven Distortions in EPR Photon Pair Correlations
Christian Howard, Roohollah Ghobadi, Nazanin Dehghan +2
Spontaneous parametric down-conversion is the primary source of position-correlated and momentum-anticorrelated photon pairs that form the canonical Einstein-Podolsky-Rosen (EPR) s…
Investigating the Performance of Adaptive Optics on Different Bases of Spatial Modes in Turbulent Channels
Rojan Abolhassani, Lukas Scarfe, Francesco Di Colandrea +3
Quantum key distribution (QKD) allows secure key exchange based on the principles of quantum mechanics, with higher-dimensional photonic states offering enhanced channel capacity a…
Programmable photonic quantum walks on lattices with cyclic, toroidal, and cylindrical topology
Alessio D'Errico, Nazanin Dehghan, Maria Gorizia Ammendola +5
Photonic implementations of unitary processes on lattice structures, such as quantum walks, have been demonstrated across various architectures. However, few platforms offer the co…
Tutorial: Hong-Ou-Mandel interference with Structured Photons
Tareq Jaouni, Xuemei Gu, Mario Krenn +2
The Hong-Ou-Mandel (HOM) effect, an effective two-photon interference phenomenon, is a cornerstone of quantum optics and a key tool for linear optical quantum information processin…
Engineering qubit dynamics in open systems with photonic synthetic lattices
Francesco Di Colandrea, Tareq Jaouni, John Grace +4
The evolution of a quantum system interacting with an environment can be described as a unitary process acting on both the system and the environment. In this framework, the system…
Nonlocal transfer of high-dimensional unitary operations
Dilip Paneru, Francesco Di Colandrea, Alessio D'Errico +1
Highly correlated biphoton states are powerful resources in quantum optics, both for fundamental tests of the theory and practical applications. In particular, high-dimensional spa…
Diffraction of correlated biphotons through transparent samples
Nazanin Dehghan, Alessio D'Errico, Yingwen Zhang +2
Two-photon states generated through degenerate spontaneous parametric down-conversion (SPDC) can exhibit sharp correlations in the transverse spatial coordinates. This property lea…
Biphoton State Reconstruction via Phase Retrieval Methods
Nazanin Dehghan, Alessio D'Errico, Francesco Di Colandrea +1
The complete measurement of the quantum state of two correlated photons requires reconstructing the amplitude and phase of the biphoton wavefunction. We show how, by means of spati…
Fourier Quantum Process Tomography
Francesco Di Colandrea, Nazanin Dehghan, Alessio D'Errico +1
The characterization of a quantum device is a crucial step in the development of quantum experiments. This is accomplished via Quantum Process Tomography, which combines the outcom…
Fast Adaptive Optics for High-Dimensional Quantum Communications in Turbulent Channels
Lukas Scarfe, Felix Hufnagel, Manuel F. Ferrer-Garcia +3
Quantum Key Distribution (QKD) promises a provably secure method to transmit information from one party to another. Free-space QKD allows for this information to be sent over great…
Full spatial characterization of entangled structured photons
Xiaoqin Gao, Yingwen Zhang, Alessio D'Errico +3
Vector beams (VBs) are fully polarized beams with spatially varying polarization distributions, and they have found widespread use in numerous applications such as microscopy, metr…
Interferometric imaging of amplitude and phase of spatial biphoton states
Danilo Zia, Nazanin Dehghan, Alessio D'Errico +2
High-dimensional biphoton states are promising resources for quantum applications, ranging from high-dimensional quantum communications to quantum imaging. A pivotal task is fully…
Super-resolution enhancement in bi-photon spatial mode demultiplexin
Florence Grenapin, Dilip Paneru, Alessio D'Errico +3
Imaging systems measuring intensity in the far field succumb to Rayleigh's curse, a resolution limitation dictated by the finite aperture of the optical system. Many proof-of-princ…
Topological transitions of the generalized Pancharatnam-Berry phase
Manuel F. Ferrer-Garcia, Kyrylo Snizhko, Alessio D'Errico +3
Distinct from the dynamical phase, in a cyclic evolution, a system's state may acquire an additional component, a.k.a. geometric phase. The latter is a manifestation of a closed pa…
Manipulating the symmetry of transverse momentum entangled biphoton states
Xiaoqin Gao, Yingwen Zhang, Alessio D'Errico +3
Bell states are a fundamental resource in photonic quantum information processing. These states have been generated successfully in many photonic degrees of freedom. Their manipula…
High-speed imaging of spatiotemporal correlations in Hong-Ou-Mandel interference
Xiaoqin Gao, Yingwen Zhang, Alessio D'Errico +2
The Hong-Ou-Mandel interference effect lies at the heart of many emerging quantum technologies whose performance can be significantly enhanced with increasing numbers of entangled…
Full-mode Characterisation of Correlated Photon Pairs Generated in Spontaneous Downconversion
Alessio D'Errico, Felix Hufnagel, Filippo Miatto +2
Spontaneous parametric downconversion is the primary source to generate entangled photon pairs in quantum photonics laboratories. Depending on the experimental design, the generate…
Two-dimensional topological quantum walks in the momentum space of structured light
Alessio D'Errico, Filippo Cardano, Maria Maffei +7
Quantum walks are powerful tools for quantum applications and for designing topological systems. Although they are simulated in a variety of platforms, genuine two-dimensional real…