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.:

US 8270841 B1

PDF
Full Text
Expired
Date of Patent:
Sep. 18, 2012

Filed:

Aug. 04, 2006
Applicants:

Tsuyoshi Nishioka, Tokyo, JP;

Shigeki Takeuchi, Sapporo, JP;

Alexandre Soujaeff, Sapporo, JP;

Toshio Hasegawa, Tokyo, JP;

Junnichi Abe, Tokyo, JP;

Inventors:

Tsuyoshi Nishioka, Tokyo, JP;

Shigeki Takeuchi, Sapporo, JP;

Alexandre Soujaeff, Sapporo, JP;

Toshio Hasegawa, Tokyo, JP;

Junnichi Abe, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 10/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

The present invention is directed to realize a stable and highly-efficient quantum communication without being influenced by the jitter of the heralding signal. In regard to the quantum encryption transmitting apparatus, the pulse-driven heralded single-photon sourcegenerates a photon pair, outputs one photon of the photon pair, and outputs the other photon of the photon pair as a heralding signal. The timing adjustersynchronizes the heralding signal with a clock signal for pulse driving the pulse-driven heralded single-photon source, and outputs as a trigger signal. The quantum communication modulating unitimplements the signal modulation to a quantum signal, in timing with the trigger signal, and transmits the quantum signal to the quantum encryption receiving apparatusvia the quantum communication path. The heralding signal transmitting unittransmits the heralding signal to the quantum encryption receiving apparatusvia the heralding signal communication path. The clock signal transmitting unittransmits the clock signal to the quantum encryption receiving apparatusvia the clock communication path


Find Patent Forward Citations

Nishioka, Tsuyoshi. (2012). Quantum communication apparatus, quantum communication system and quantum communication method (U.S. Patent No. 8270841). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8270841

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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