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:
Jan. 08, 2008
Filed:
May. 20, 2002
Peter Zoller, Innsbruck, AT;
Luming Duan, Ann Arbor, MI (US);
Ignacio Cirac, Garching, DE;
Mikhail D. Lukin, Cambridge, MA (US);
Peter Zoller, Innsbruck, AT;
Luming Duan, Ann Arbor, MI (US);
Ignacio Cirac, Garching, DE;
Mikhail D. Lukin, Cambridge, MA (US);
Magiq Technologies, Inc., New York, NY (US);
Abstract
Apparatus and methods for high fidelity quantum communication over long communication channels even in the presence of significant loss in the channels are disclosed. The invention employs laser manipulation of quantum correlated atomic ensembles using linear optic components, optical sources of low intensity pulses, beam splitters, and single-photon detectors requiring only moderate efficiencies. The invention provides fault-tolerant entanglement generation and connection, using a sequence of steps that each provide built-in entanglement purification and that are each resilient to the realistic noise. The invention relies upon collective excitation in atomic ensembles rather than single particle excitations in atomic ensembles so that communication efficiency scales polynomially with the total length of a communication channel.