The ability to manipulate quantum states of light by integrated devices may open new
perspectives both for fundamental tests of quantum mechanics and for novel technological …

Programmable optical circuits are an important tool in developing quantum technologies
such as transceivers for quantum communication and integrated photonic chips for quantum …

Quantum key distribution is on the verge of real world applications, where perfectly secure
information can be distributed among multiple parties. Several quantum cryptographic …

Superconducting quantum circuits are a promising candidate for building scalable quantum
computers. Here, we use a four-qubit superconducting quantum processor to solve a two …

We present an algorithm for projecting superoperators onto the set of completely positive,
trace-preserving maps. When combined with gradient descent of a cost function, the …

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 …

We study maximal coin-position entanglement generation via a discrete-time quantum walk,
in which the coin operation is randomly selected from one of two coin operators set at each …

We present a complete methodology for testing the performances of quantum tomography
protocols. The theory is validated by several numerical examples and by the comparison …

Recent developments in integrated photonics technology are opening the way to the
fabrication of complex linear optical interferometers. The application of this platform is …

Plasmonics is a rapidly emerging platform for quantum state engineering with the potential
for building ultra-compact and hybrid optoelectronic devices. Recent experiments have …