This book provides a step-by-step guide on how to construct a narrowband single photon source
for the integration with atom-based memory systems. It combines the necessary theoretical
background with crucial experimental methods and characterisations to form a complete handbook
for readers at all academic levels.The future implementation of large quantum networks will
require the hybridisation of photonic qubits for communication with quantum memories in the
context of information storage. Such an interface requires carefully tailored single photons to
ensure compatibility with the chosen memory.The source itself is remarkable for a number of
reasons including being the spectrally narrowest and brightest source of its kind in addition
it offers a novel technique for frequency stabilisation in an optical cavity together with
exceptional portability. Starting with a thorough analysis of the current literature this book
derives the essential parameters needed to design the source describes its individual
components in detail and closes with the characterisation of a single photon source.
