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:
Jun. 02, 2026
Filed:
Feb. 09, 2024
Ut-battelle, Llc, Oak Ridge, TN (US);
Brian P. Williams, Oak Ridge, TN (US);
UT-BATTELLE, LLC, Oak Ridge, TN (US);
Abstract
A receiver configured to remove a bias of a homodyne detector is provided. The receiver produces at least one clone local oscillator (LO) pulse per LO pulse for the reference pulse and per LO pulse for the data-carrying pulse. Measurement made using clone LO pulses are used to compensate for the bias in reference measurements and data-carrying measurements. Clone LO pulses are produced when the reference pulses and the data-carrying pulses are not expected to be present at the homodyne detector. The bias corrected reference measurements may be used as feedback to maintain a timing synchronization of the LO for the reference pulse and the LO for the data-carrying pulse with the corresponding reference pulse and the data-carrying pulse, respectively and for polarization correction. The receiver may be incorporated into a continuous variable (CV) quantum key distribution (QKD) system.