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:
May. 26, 2026
Filed:
Nov. 17, 2021
Université DE Genève, Geneva, CH;
Universitat Autonoma DE Barcelona, Barcelona, ES;
Hugo Zbinden, Genèva, CH;
Angeles Vazquez Castro, Barcelona, ES;
UNIVERSITE DE GENEVE, Geneva, CH;
UNIVERSITAT AUONOMA DE BARCELONA, Barcelona, ES;
Abstract
Free-Space quantum keyless private communication method according to a communication protocol comprising exchanging information between an emitter () and a receiver () through a main quantum-classical channel and with an eavesdropper tapping said main channel through a wiretap channel, based on the wiretap channel model, wherein the overall degradation of the wiretap channel is superior than that of the main channel, comprising the steps of preparing, at the emitter (), a message M composed of classical bits, coding said message M so as to transform it into a coded message X, practical modulating the amplitude and/or the phase of the optical pulses of the coded classical bits, sending the encoded message to the receiver () through a classical-quantum channel (), such that an eavesdropper () tapping said channel is provided with partial information about the said states only, detecting and decoding the received message through quantum security analysis.