Quantum Communication with Photons

Mario Krenn, Mehul Malik, Thomas Scheidl, Rupert Ursin, Anton Zeilinger

Research output: Chapter in Book/Report/Conference proceedingChapter

50 Citations (Scopus)


The secure communication of information plays an ever increasing role in our society today. Classical methods of encryption inherently rely on the difficulty of solving a problem such as finding prime factors of large numbers and can, in principle, be cracked by a fast enough machine. The burgeoning field of quantum communication relies on the fundamental laws of physics to offer unconditional information security. Here we introduce the key concepts of quantum superposition and entanglement as well as the no-cloning theorem that form the basis of this field. Then, we review basic quantum communication schemes with single and entangled photons and discuss recent experimental progress in ground and space-based quantum communication. Finally, we discuss the emerging field of high-dimensional quantum communication, which promises increased data rates and higher levels of security than ever before. We discuss recent experiments that use the orbital angular momentum of photons for sharing large amounts of information in a secure fashion.
Original languageEnglish
Title of host publicationOptics in Our Time
EditorsM. D. Al-Amri, M. M. El-Gomati, M. Suhail Zubairy
Number of pages28
ISBN (Electronic)9783319319032
ISBN (Print)9783319319025
Publication statusPublished - 2016


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