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:
Feb. 28, 2006
Filed:
Aug. 28, 2003
James D. Franson, Ellicott City, MD (US);
Michelle M. Donegan, Columbia, MD (US);
Michael J. Fitch, Catonsville, MD (US);
Bryan C. Jacobs, Sykesville, MD (US);
Todd B. Pittman, Catonsville, MD (US);
James D. Franson, Ellicott City, MD (US);
Michelle M. Donegan, Columbia, MD (US);
Michael J. Fitch, Catonsville, MD (US);
Bryan C. Jacobs, Sykesville, MD (US);
Todd B. Pittman, Catonsville, MD (US);
The Johns Hopkins University, Baltimore, MD (US);
Abstract
Techniques for high fidelity quantum teleportation include receiving an input photon representing a qubit. Ancilla photons are generated in a particular ancilla quantum state chosen to reduce a rate of error below a threshold error rate. The ancilla and the input photon are combined to populate output channels. A number of photons representing logical value 1 are measured in a subset of the output channels. A particular output channel is determined based on the measured number of photons. A teleported photon is obtained at the particular output channel with an error rate below the threshold error rate. These techniques allow the ancilla quantum state to be chosen to minimize the error despite the presence of losses and noise. Quantum logic operations are performed by teleporting two input qubits with the quantum state of the ancilla chosen to produce the desired logical result and reduce the error.