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, 2015
Filed:
Oct. 26, 2009
Keith Harrison, Chepstow, GB;
William Munro, Bristol, GB;
Kae Nemoto, Tokyo, JP;
Abstract
A method is provided of creating an end-to-end entanglement () between qubits in first and second end nodes () of a chain of optically-coupled nodes whose intermediate nodes () are quantum repeaters. Local entanglements () are created on an on-going basis between qubits in neighboring pairs in the chain through interaction of the qubits with light fields transmitted between the nodes. The quantum repeaters () are cyclically operated with their top-level operating cycles being synchronized. Once every top-level operating cycle, each repeater () initiates a merging of two entanglements involving respective repeater qubits that are at least expected to be entangled with qubits in nodes disposed in opposite directions along the chain from the repeater. A quantum repeater () adapted for implementing this method is also provided.