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:
Nov. 25, 2025
Filed:
Feb. 02, 2023
Quantum Optics Jena Gmbh, Jena, DE;
Quantum Optics Jena GmbH, Jena, DE;
Abstract
A method for polarization alignment, preferably for and/or in the case of optical communication, quantum cryptography and/or quantum computing, comprising a source () for generating polarization-entangled photon pairs and two detection modules (), wherein the source () for transmitting the photons is connected via in each case one quantum channel () to the two detection modules, and wherein each detection module measures the polarization of the photons in two non-orthogonal bases, and including a polarization compensation unit () for polarization alignment of the polarization change during the transmission of the photons via the quantum channels, wherein the polarization compensation unit () has several optical components. The polarization alignment is effected by a downhill simplex algorithm and/or by a deterministic algorithm.