| 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. |