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:
May. 12, 2009
Filed:
Oct. 12, 2007
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
The invention provides systems and methods enabling high fidelity quantum communication over long communication channels even in the presence of significant loss in the channels. The invention involves laser manipulation of quantum correlated atomic ensembles using linear optic components (), optical sources of low intensity pulses (), interferers in the form of 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 realistic noise levels. The invention relies upon collective rather single particle excitations in atomic ensembles and results in communication efficiency scaling polynomially with the total length of the communication channel.