Generation and confirmation of a (100 x 100)-dimensional entangled quantum system

TitleGeneration and confirmation of a (100 x 100)-dimensional entangled quantum system
Publication TypeJournal Article
Year of Publication2014
AuthorsKrenn, M, Huber, M, Fickler, R, Lapkiewicz, R, Ramelow, S, Zeilinger, A
JournalProceedings of the National Academy of Sciences
Volume111
Pagination6243 - 6247
Date Published04/2014
ISSN1091-6490
Abstract

Entangled quantum systems have properties that have fundamentally overthrown the classical worldview. Increasing the complexity of entangled states by expanding their dimensionality allows the implementation of novel fundamental tests of nature, and moreover also enables genuinely new protocols for quantum information processing. Here we present the creation of a (100x100)-dimensional entangled quantum system, using spatial modes of photons. For its verification we develop a novel nonlinear criterion which infers entanglement dimensionality of a global state by using only information about its subspace correlations. This allows very practical experimental implementation as well as highly efficient extraction of entanglement dimensionality information. Applications in quantum cryptography and other protocols are very promising.

DOI10.1073/pnas.1402365111
Short TitleProceedings of the National Academy of Sciences
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