Journal
EPL
Volume 97, Issue 5, Pages -Publisher
EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY
DOI: 10.1209/0295-5075/97/50007
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Funding
- German Research Foundation (DFG) [WI 3415/1]
- Danish National Research Foundation
- Villum Kann Rasmussen foundation
- NSF
- CUA
- DARPA
- Packard Foundation
- Division Of Physics
- Direct For Mathematical & Physical Scien [969816] Funding Source: National Science Foundation
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We discuss a new method for realizing number-resolving and non-demolition photo detectors by strong coupling of light to individual single photon emitters, which act as strong optical non-linearities. As a specific application we show how these elements can be integrated into an error-proof Bell state analyzer, whose efficiency exceeds the best possible performance with linear optics even for a modest atom-field coupling. The methods are error-proof in the sense that every detection event unambiguously projects the photon state onto a Fock or Bell state and imperfections only result in reduced success probability, not in wrong results. editor's choice Copyright (C) EPLA, 2012
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