Title :
Four-state discrimination scheme beyond the heterodyne limit
Author :
Müller, Christian R. ; Usuga, Mario A. ; Wittmann, Christoffer ; Takeoka, Masahiro ; Marquardt, Christoph ; Andersen, Ulrik L. ; Leuchs, Gerd
Author_Institution :
Max Planck Inst. for the Sci. of Light, Erlangen, Germany
Abstract :
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.
Keywords :
heterodyne detection; quadrature phase shift keying; quantum communication; feed forward detection; four state discrimination scheme; heterodyne detection; heterodyne limit; hybrid discrimination scheme; photon detection; quadrature measurement; quadrature phase shift keying protocol; Adaptive optics; Error analysis; Optical mixing; Phase shift keying; Photonics; Protocols; Receivers;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2012 Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4673-1839-6
