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:
Aug. 18, 2020
Filed:
Oct. 03, 2019
Huawei Technologies Co., Ltd., Shenzhen, Guangdong, CN;
Yongjing Cai, Zürich, CH;
Liangliang Lu, Shenzhen, CN;
HUAWEI TECHNOLOGIES CO., LTD., Shenzhen, Guangdong, CN;
Abstract
Embodiments of this application relate to a signal receiving apparatus and method. The receiving apparatus includes: a signal receiving module, configured to detect a reference pulse signal in a received optical pulse signal where the optical pulse signal is the reference pulse signal and a quantum optical pulse signal; and a synchronization clock module, configured to obtain a modulation pulse signal based on the reference pulse signal. A first intensity modulator in the signal receiving module is configured to obtain, based on the modulation pulse signal, a first local-frequency optical pulse signal having same timing as the optical pulse signal, and the signal receiving module uses the first local-frequency optical pulse signal to interfere with the reference pulse signal and the quantum optical pulse signal separately to obtain a raw key.