39 citations · 203 across the 21 of their papers we have counts for
14 papers · 1 filter
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…
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…
High-Dimensional Quantum Key Distribution with Qubit-like States
Lukas Scarfe, Rojan Abolhassani, Frédéric Bouchard +4
Quantum key distribution (QKD) protocols most often use two conjugate bases in order to verify the security of the quantum channel. In the majority of protocols, these bases are mu…
Programmable non-Hermitian photonic quantum walks via dichroic metasurfaces
Paola Savarese, Sarvesh Bansal, Maria Gorizia Ammendola +6
The evolution of a closed quantum system is described by a unitary operator generated by a Hermitian Hamiltonian. However, when certain degrees of freedom are coupled to an environ…
Generation of the Complete Bell Basis via Hong-Ou-Mandel Interference
Xiaoqin Gao, Dilip Paneru, Francesco Di Colandrea +2
Optical vector modes (VMs), characterized by spatially varying polarization distributions, have become essential tools across microscopy, metrology, optical trapping, nanophotonics…
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…
Predicting atmospheric turbulence for secure quantum communications in free space
Tareq Jaouni, Lukas Scarfe, Frédéric Bouchard +4
Atmospheric turbulence is the main barrier to large-scale free-space quantum communication networks. Aberrations distort optical information carriers, thus limiting or preventing t…
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…
Quantum process tomography of structured optical gates with convolutional neural networks
Tareq Jaouni, Francesco Di Colandrea, Lorenzo Amato +2
The characterization of a unitary gate is experimentally accomplished via Quantum Process Tomography, which combines the outcomes of different projective measurements to reconstruc…
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…
Retrieving space-dependent polarization transformations via near-optimal quantum process tomography
Francesco Di Colandrea, Lorenzo Amato, Roberto Schiattarella +2
An optical waveplate rotating light polarization can be modeled as a single-qubit unitary operator, whose action can be experimentally determined via quantum process tomography. St…
Quantum walks of two correlated photons in a 2D synthetic lattice
Chiara Esposito, Mariana R. Barros, Andrés Durán Hernández +7
Quantum walks represent paradigmatic quantum evolutions, enabling powerful applications in the context of topological physics and quantum computation. They have been implemented in…
Ultra-long quantum walks via spin-orbit photonics
Francesco Di Colandrea, Amin Babazadeh, Alexandre Dauphin +3
The possibility of fine-tuning the couplings between optical modes is a key requirement in photonic circuits for quantum simulations. In these architectures, emulating the long-tim…