Abstract: A document having a non-volatile memory area for storing a secret identifier that has a first n-digit character sequence from a predefined character set; a random generator for selecting at least one character from the predefined character set for replacement of at least one character of the first character sequence, such that a second n-digit character sequence is defined as a result of this replacement; a volatile memory area for storing the at least one selected character; a display device for displaying the at least one selected character; an interface for inputting a third character sequence; and a processor element for authenticating the user to the document, wherein the processor element is configured to access the non-volatile memory area and the volatile memory area in order to read the second character sequence and check for a match between the second and third character sequences in order to authenticate the user.
Type:
Application
Filed:
October 15, 2012
Publication date:
September 25, 2014
Applicants:
HUMBOLT-UNIVERSITÄT ZU BERLIN, BUNDESDRUCKEREI GMBH
Inventors:
Paul Bastian, Frank Dietrich, Manfred Paeschke, Wolf Müller
Abstract: An embodiment of the invention relates to a single photon emission system having a proximal end, a distal end, and a single photon emitter located between the proximal end and the distal end; wherein the single photon emission system is adapted to guide optical pump radiation, which is inputted at the proximal end to optically excite the single photon emitter, along a predefined direction that runs from the proximal end to the distal end; and wherein single photons emitted by said single photon emitter, are guided along said predefined direction to the distal end.
Type:
Grant
Filed:
September 2, 2010
Date of Patent:
September 23, 2014
Assignees:
Technische Universitat Darmstadt, Humbolt-Universitat zu Berlin
Inventors:
Tim Schröder, Oliver Benson, Andreas Schell, Philip Engel, Moritz Julian Banholzer, Friedemann Gädeke, Gerhard Birkl