Inventor
SCHMITZER HEIDRUN
DE14 patents
⚠️ This page may combine multiple inventors who share the name “SCHMITZER HEIDRUN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
DEUTSCHE TELEKOM AG
13 patentsUS6609139B1Aug 19, 2003
Method for generating a random number on a quantum-mechanical basis and random number generator
DEUTSCHE TELEKOM AG69 citations94
US6430345B1Aug 6, 2002
Method and device for producing a choice of either single photons or pairs of photons in an optical channel
DEUTSCHE TELEKOM AG56 citations93
US7003665B1Feb 21, 2006
Method for the secure transmission of messages
DEUTSCHE TELEKOM AG34 citations91
US6986056B1Jan 10, 2006
Method and arrangement for generating binary sequences of random numbers
DEUTSCHE TELEKOM AG23 citations91
US6748081B1Jun 8, 2004
Quantum cryptography system for a secure transmission of random keys using a polarization setting method
DEUTSCHE TELEKOM AG23 citations91
US7649610B1Jan 19, 2010
Method and device for reducing speckle formation on a projection screen
DEUTSCHE TELEKOM AG18 citations83
US6282333B1Aug 28, 2001
Method and device to compensate for polarization mode dispersion in an optical transmission link
DEUTSCHE TELEKOM AG15 citations81
US6947193B1Sep 20, 2005
Optical phase modulator
DEUTSCHE TELEKOM AG9 citations73
US6249350B1Jun 19, 2001
Interferometer and methods for compensation of dispersion or increase in spectral resolution of such an interferometer
DEUTSCHE TELEKOM AG13 citations69
US6727491B1Apr 27, 2004
Sensor and method for detecting changes in distance
DEUTSCHE TELEKOM AG6 citations61
US7468827B2Dec 23, 2008
Device for generating adding and subtracting digital sequences of optical pulses and method for secure transmission of information
DEUTSCHE TELEKOM AG0 citations51
US7769300B1Aug 3, 2010
Reducing the distortion of optical pulses caused by polarization mode dispersion in optical communication systems
DEUTSCHE TELEKOM AG0 citations37
US6884990B2Apr 26, 2005
Method for changing the polarization of at least one of the photons emitted from a photon-pair source into various partial paths of rays, and method for optionally generating individual photons or photon pairs in an optical channel
DEUTSCHE TELEKOM AG0 citations34