Patents by Inventor Constantin Brif

Constantin Brif has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Secure fiber optic seals enabled by quantum optical communication concepts
    Patent number: 10341015
    Abstract: Described herein are various technologies pertaining to detecting tampering of a seal based upon quantum optical communication via a communications channel comprising the seal. A plurality of pulses of light encoded with random data are transmitted on the communications channel, whereupon they are received and their data values measured. The measured data values of the pulses are then compared to the known transmitted data to determine a correlation statistic between the transmitted and received data values. Tampering with the seal can be detected based upon identifying that the correlation statistic has dropped below a threshold non-tampered level of correlation between transmitted and received values.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: July 2, 2019
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Mohan Sarovar, David Farley, Daniel B. S. Soh, Ryan Camacho, Constantin Brif