Quantum communication with photons

Autor(en)

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

Abstrakt

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.

Organisation(en)

Quantenoptik, Quantennanophysik und Quanteninformation

Externe Organisation(en)

Österreichische Akademie der Wissenschaften (ÖAW), Vienna Center for Quantum Science and Technology (VCQ)

Seiten

455-482

Anzahl der Seiten

28

DOI

https://doi.org/10.1007/978-3-319-31903-2_18

Publikationsdatum

12-2016

ÖFOS 2012

103026 Quantenoptik

ASJC Scopus Sachgebiete

Allgemeiner Maschinenbau, Allgemeine Physik und Astronomie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/3fd27681-39a1-4ea3-90cb-493fa5d23235