Four-state discrimination scheme beyond the heterodyne limit

C. R. Muller, Mario A. Usuga Castaneda, C. Wittmann, M. Takeoka, C. Marquardt, U. L. Andersen, G. Leuchs

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


We propose and experimentally demonstrate a hybrid discrimination scheme for the quadrature phase shift keying protocol, which outperforms heterodyne detection for any signal power. The discrimination is composed of a quadrature measurement, feed forward and photon detection.
Original languageEnglish
Title of host publicationProceedings of CLEO 2012
Number of pages2
PublisherOptical Society of America
Publication date2012
ISBN (Print)978-1-4673-1839-6
Publication statusPublished - 2012
EventConference on Lasers and Electro-Optics (CLEO 2012) - San Jose Convention Center, San Jose, CA, United States
Duration: 6 May 201211 May 2012


ConferenceConference on Lasers and Electro-Optics (CLEO 2012)
Location San Jose Convention Center
Country/TerritoryUnited States
CitySan Jose, CA
Internet address


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