TL;DR
This review discusses how quantum properties of light enable advanced information processing with single photons, highlighting current methods, challenges, and the potential for practical quantum photonic technologies.
Contribution
It provides a comprehensive overview of implementing quantum information processing with single photons and discusses the key hurdles for practical applications.
Findings
Quantum properties of light enable new information processing capabilities.
Current methods for photonic quantum information processing are reviewed.
Major challenges for practical implementation are identified.
Abstract
Information processing with light is ubiquitous, from communication, metrology and imaging to computing. When we consider light as a quantum mechanical object, new ways of information processing become possible. In this review I give an overview how quantum information processing can be implemented with single photons, and what hurdles still need to be overcome to implement the various applications in practice. I will place special emphasis on the quantum mechanical properties of light that make it different from classical light, and how these properties relate to quantum information processing tasks.
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