Noiseless Filtering of non-Gaussian Noise from Continuous-Variable Quantum Information

Author

Wittmann, C. ; Elser, D. ; Andersen, U.L. ; Filip, R. ; Marek, P. ; Leuchs, G.

Author_Institution

Univ. Erlangen-Nurnberg, Erlangen

fYear

2007

fDate

17-22 June 2007

Firstpage

1

Lastpage

1

Abstract

In this paper, we consider the process of filtering non-Gaussian noise from binary coherent states using two different measurement methods: homodyne detection and on/off detection. Characteristics of homodyne and on/off detection in such a filter are compared and the optimal device is discussed. The performance of the protocol was characterized by measuring the signal state probability before and after filtration. We also measured the success probability (that is, the probability for a positive filter output) as well as the filter sensitivity for extremely weak signal states. All these results will be presented.

Keywords

homodyne detection; probability; quantum communication; signal denoising; binary coherent states; continuous-variable quantum information; extremely weak signal states; filter sensitivity; homodyne detection; noiseless filtering; non-Gaussian noise; on/off detection; optimal device; signal state probability; success probability; Detectors; Diodes; Gaussian noise; Information filtering; Information filters; Optical filters; Optical mixing; Optical noise; Phase detection; Protocols;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 2007 and the International Quantum Electronics Conference. CLEOE-IQEC 2007. European Conference on

Conference_Location

Munich

Print_ISBN

978-1-4244-0931-0

Electronic_ISBN

978-1-4244-0931-0

Type

conf

DOI

10.1109/CLEOE-IQEC.2007.4386763

Filename

4386763