Linear optics underpins fundamental tests of quantum mechanics and quantum
technologies. We demonstrate a single reprogrammable optical circuit that is sufficient to …

Quantum information theory is a branch of science at the frontier of physics, mathematics,
and information science, and offers a variety of solutions that are impossible using classical …

Nontrivial spectral properties of non-Hermitian systems can lead to intriguing effects with no
counterparts in Hermitian systems. For instance, in a two-mode photonic system, by …

The identification of phenomena able to pinpoint quantum interference is attracting large
interest. Indeed, a generalization of the Hong–Ou–Mandel effect valid for any number of …

We propose the realization of exceptional points (EP) at bound states in the continuum
(BIC), with two coupled strips, made of an electron-beam resist and patterned on the thin film …

Quantum Fourier transforms (QFTs) have gained increased attention with the rise of
quantum walks, boson sampling, and quantum metrology. Here, we present and …

The state vector representing a quantum system acquires a phase factor following an
adiabatic evolution along a closed trajectory in phase space. This is the traditional example …

One of the central principles of quantum mechanics is that if there are multiple paths that
lead to the same event and there is no way to distinguish between them, interference occurs …

Linear optical circuits of growing complexity are playing an increasing role in emerging
photonic quantum technologies. Individual photonic devices are typically described by a …

Multiphoton interference is at the heart of photonic quantum technologies. Arrays of
integrated cavities can support bright sources of single photons with high purity and small …