Photonic processors are pivotal for both quantum and classical information processing tasks
using light. In particular, linear optical quantum information processing requires both large …

We show that the Hong-Ou-Mandel effect from quantum optics is equivalent to the swap test,
a quantum information primitive which compares two arbitrary states. We first derive a …

Frequency-bin qubits possess unique synergies with wavelength-multiplexed lightwave
communications, suggesting valuable opportunities for quantum networking with the existing …

The nature of a quantum computer is described in the concrete context of a quantum
simulator of the single-particle Schrödinger equation. We show that a register of 6–10 qubits …

We give a necessary condition for photon state transformations in linear optical setups
preserving the total number of photons. From an analysis of the algebra describing the …

The design, fabrication, and detailed calibration of essential building blocks towards fully
integrated linear-optics quantum computation are discussed. Photonic devices are made …

Exceptional points (EPs), that is, branch point singularities of non-Hermitian Hamiltonians,
are ubiquitous in optics. So far, the signatures of EPs have been mostly studied assuming …

A quantum theory of light propagation in two optical channel waveguides tunneling coupled
to a common continuum of modes (such as those of a slab waveguide) is presented, and …

Photonic processors are pivotal for both quantum and classical information processing tasks
using light. In particular, linear optical quantum information processing requires both …

Optical integrated quantum computing protocols, in particular using the dual-rail encoding,
require that waveguides cross each other to realize, eg, SWAP or Toffoli gate operations. We …