Multi-Photon Quantum Information Science and Technology in Integrated Optics, 2013
Springer Theses Series

Photons are an attractive option for testing fundamental quantum physics and developing new quantum-enhanced technology, including highly advanced computers and simulators, as well as precision sensing beyond shot-noise. Traditionally, bulk optical components have been bolted onto optical benches to realize metre-scale quantum circuits. However this approach is ultimately proving unwieldy for increasing the complexity and for scaling up to practical quantum technologies based on photons.

The work presented here demonstrates a series of quantum photonic devices based on waveguide circuits embedded in miniature monolithic chips. This represents a paradigm shift in the underlying architecture of quantum optics and provides key building blocks for all-optical and hybrid quantum technologies.

Background and Methods.- The Hong-Ou-Mandel effect in a waveguide directional coupler.- Multi directional-coupler circuit for quantum logic.- Quantum interference in a waveguide interferometer.- Heralded NOON state generation in waveguide.- Two photon quantum walks.- Simulating arbitrary quantum statistics with entangled photons.