BR9805314A - Quaternary optical transmitter and encoder and quantum cryptographic system - Google Patents
Quaternary optical transmitter and encoder and quantum cryptographic systemInfo
- Publication number
- BR9805314A BR9805314A BR9805314A BR9805314A BR9805314A BR 9805314 A BR9805314 A BR 9805314A BR 9805314 A BR9805314 A BR 9805314A BR 9805314 A BR9805314 A BR 9805314A BR 9805314 A BR9805314 A BR 9805314A
- Authority
- BR
- Brazil
- Prior art keywords
- photons
- quaternary
- quantum
- encoder
- cryptographic system
- Prior art date
Links
Landscapes
- Optical Communication System (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
<B>Emissor e Codificador óptico Quaternário e Sistema Criptográfico Quântico<D>, sendo que o Emissor e Codificador óptico Quaternário gera simultâneamente pares de fótons em combinações de estados de polarização que podem formar um conjunto quaternário de elementos ortogonais identificáveis por um sistema de coincidência de fótons. Os fótons são gerados pela Luminescência de Conversão Paramétrica Descendente num modo de interferência quântica. O feixe bombeador pode ser um feixe de laser ou de um diodo laser e a codificação é realizada por moduladores ópticos. Um único fóton de cada par de fótons é manipulado para se codificar simultâneamente cada elemento quaternário naquele par de fótons. O Sistema Criptografico Quântico, utiliza bases quaternárias geradas pelo Emissor e Codificador óptico Quaternário para comunicação segura, vinculada à impossibilidade de se clonar fótons, é de alto ganho de transmissão a nível de fótons e capaz de indicar vazamento de sinais. A detecção de sinais é pela técnica de coincidências e apresenta excelente rejeição de ruídos, além de permitir autenticação automática da transmissão. Os setores técnicos da invenção incluem a comunicação quântica, criptografia quântica e a computação quântica.<B> Quaternary optical emitter and encoder and quantum cryptographic system <D>, the Quaternary optical emitter and encoder simultaneously generating pairs of photons in combinations of polarization states that can form a quaternary set of orthogonal elements identifiable by a coincidence system of photons. Photons are generated by Parametric Descending Conversion Luminescence in a quantum interference mode. The pumping beam can be a laser beam or a laser diode and coding is performed by optical modulators. A single photon from each pair of photons is manipulated to simultaneously encode each quaternary element in that pair of photons. The Quantum Cryptographic System, uses quaternary bases generated by the Emitter and Quaternary Optical Encoder for secure communication, linked to the impossibility of cloning photons, is of high gain in transmission at the level of photons and capable of indicating signal leakage. Signal detection is by coincidence technique and has excellent noise rejection, in addition to allowing automatic transmission authentication. The technical sectors of the invention include quantum communication, quantum cryptography and quantum computing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BR9805314A BR9805314A (en) | 1998-05-15 | 1998-05-15 | Quaternary optical transmitter and encoder and quantum cryptographic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BR9805314A BR9805314A (en) | 1998-05-15 | 1998-05-15 | Quaternary optical transmitter and encoder and quantum cryptographic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BR9805314A true BR9805314A (en) | 2000-06-06 |
Family
ID=4071097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR9805314A BR9805314A (en) | 1998-05-15 | 1998-05-15 | Quaternary optical transmitter and encoder and quantum cryptographic system |
Country Status (1)
| Country | Link |
|---|---|
| BR (1) | BR9805314A (en) |
-
1998
- 1998-05-15 BR BR9805314A patent/BR9805314A/en not_active IP Right Cessation
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| B08F | Application fees: dismissal - article 86 of industrial property law |
Free format text: REFERENTE AS 8A E 9A ANUIDADES |
|
| B08H | Application fees: decision cancelled |
Free format text: REFERENTE AO DESPACHO PUBLICADO NA RPI 1922 DE 06/11/2007 POR TER SIDO INDEVIDO. |
|
| B08F | Application fees: dismissal - article 86 of industrial property law |
Free format text: REFERENTE A 12A ANUIDADE |
|
| B08K | Maintenance of archiving: application remains archived as no request for restauration (art. 87) has been received. |
Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2073 DE 28/09/2010. |