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:
Sep. 02, 2025
Filed:
Jul. 28, 2021
Tsinghua University, Beijing, CN;
Guilu Long, Beijing, CN;
Dong Pan, Beijing, CN;
TSINGHUA UNIVERSITY, Beijing, CN;
Abstract
The present application provides a secure repeater-based quantum communication method and communication network. Said method comprises a transmitter encrypting plaintext information to be sent, to obtain ciphertext; the transmitter sending the ciphertext to a repeater node by means of a quantum communication protocol, so as to send the ciphertext to a receiver by means of at least one repeater node; and after receiving the ciphertext, the receiver decrypting the ciphertext to obtain the plaintext information. The ciphertext is transmitted step by step by means of the at least one repeater node, which is not limited to the distance between the transmitter and the receiver, so that the ciphertext can be transmitted over a long distance. Furthermore, before arriving at the receiver, the plaintext information is transmitted in the form of a ciphertext and is decrypted on the fly, thereby reducing the risk of information being eavesdropped, improving the security.