The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 26, 2005
Filed:
Feb. 21, 2001
Wolfgang Dultz, Frankfurt/M., DE;
Heidrun Schmitzer, Cincinnati, OH (US);
Kay Michael Schmid, Frankfurt am Main, DE;
Helmar A. Becker, Hanau, DE;
Wolfgang Dultz, Frankfurt/M., DE;
Heidrun Schmitzer, Cincinnati, OH (US);
Kay Michael Schmid, Frankfurt am Main, DE;
Helmar A. Becker, Hanau, DE;
Deutsche Telekom AG, Bonn, DE;
Abstract
A method is provided for changing the polarization of at least one of the photons emitted from a photon pair source into various partial ray paths using an electro-optical modulator (EOM), which is positioned in the particular partial ray path being traversed by the photon to be influenced and which, in the activated state, is able to alter the polarization of a photon, the modulator being activated as a function of time such that the probability that the photon is found in the region of the electro-optical modulator in the activated state is at a maximum.