An entanglement filter

R Okamoto, J.L O'Brien, HF Hofmann, T Nagata, K Sasaki, S Takeuchi

Research output: Contribution to journalArticle (Academic Journal)peer-review

56 Citations (Scopus)


The ability to filter quantum states is a key capability in quantum information science and technology, in which one-qubit filters, or polarizers, have found wide application. Filtering on the basis of entanglement requires extension to multi-qubit filters with qubit-qubit interactions. We demonstrated an optical entanglement filter that passes a pair of photons if they have the desired correlations of their polarization. Such devices have many important applications to quantum technologies.
Translated title of the contributionAn entanglement filter
Original languageEnglish
Pages (from-to)483 - 485
Number of pages3
Issue number5913
Publication statusPublished - Jan 2009

Bibliographical note

Publisher: American Association for the Advancement of Science

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