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  Demonstration of Coherent-State Discrimination Using a Displacement-Controlled Photon-Number-Resolving Detector

Wittmann, C., Andersen, U. L., Takeoka, M., Sych, D., & Leuchs, G. (2010). Demonstration of Coherent-State Discrimination Using a Displacement-Controlled Photon-Number-Resolving Detector. PHYSICAL REVIEW LETTERS, 104(10): 100505. doi:10.1103/PhysRevLett.104.100505.

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 Urheber:
Wittmann, Christoffer1, Autor           
Andersen, Ulrik L.1, Autor           
Takeoka, Masahiro2, Autor
Sych, Denis3, Autor           
Leuchs, Gerd4, Autor           
Affiliations:
1Quantum Information Processing, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society, ou_2364707              
2external, ou_persistent22              
3Optics Theory Group, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society, ou_2364706              
4Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society, ou_2364698              

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Schlagwörter: NONORTHOGONAL QUANTUM STATES; DIFFERENTIATEPhysics;
 Zusammenfassung: We experimentally demonstrate a new measurement scheme for the discrimination of two coherent states. The measurement scheme is based on a displacement operation followed by a photon-number-resolving detector, and we show that it outperforms the standard homodyne detector which we, in addition, prove to be optimal within all Gaussian operations including conditional dynamics. We also show that the non-Gaussian detector is superior to the homodyne detector in a continuous variable quantum key distribution scheme.

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Sprache(n): eng - English
 Datum: 2010
 Publikationsstatus: Online veröffentlicht
 Seiten: 4
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: ISI: 000275543500005
DOI: 10.1103/PhysRevLett.104.100505
 Art des Abschluß: -

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Titel: PHYSICAL REVIEW LETTERS
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA : AMER PHYSICAL SOC
Seiten: - Band / Heft: 104 (10) Artikelnummer: 100505 Start- / Endseite: - Identifikator: ISSN: 0031-9007