Linear optics with photon counting is a prominent candidate for practical quantum
computing. The protocol by Knill, Laflamme, and Milburn [2001, Nature (London) 409, 46] …

Multiphoton interference reveals strictly nonclassical phenomena. Its applications range
from fundamental tests of quantum mechanics to photonic quantum information processing …

Metamaterials constructed from deep subwavelength building blocks have been used to
demonstrate phenomena ranging from negative refractive index and ε-near-zero to cloaking …

Dense coding is arguably the protocol that launched the field of quantum communication.
Today, however, more than a decade after its initial experimental realization, the channel …

Hyperentanglement is a promising resource in quantum information processing with its high
capacity character, defined as the entanglement in multiple degrees of freedom (DOFs) of a …

On-chip photon sources carrying orbital angular momentum (OAM) are in demand for high-
capacity optical information processing in both classical and quantum regimes. However …

We demonstrate a simple, robust, and ultrabright parametric down-conversion source of
polarization-entangled photons based on a polarization Sagnac interferometer. Bidirectional …

The phenomenon of entanglement marks one of the furthest departures from classical
physics and is indispensable for quantum information processing. Despite its fundamental …

Quantum Mechanics (QM) is one of the pillars of modern physics: an impressive amount of
experiments have confirmed this theory and many technological applications are based on …

Quantum entanglement is a fundamental resource in quantum information processing and
its distribution between distant parties is a key challenge in quantum communications …