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:
Nov. 07, 2006
Filed:
Jul. 26, 2004
Raymond G. Beausoleil, Jr., Redmond, WA (US);
William J. Munro, Bristol, GB;
Timothy P. Spiller, Bristol, GB;
Sean D. Barrett, Bristol, GB;
Pieter Kok, Cardiff, GB;
Kae Nemoto, Tokyo, JP;
Raymond G. Beausoleil, Jr., Redmond, WA (US);
William J. Munro, Bristol, GB;
Timothy P. Spiller, Bristol, GB;
Sean D. Barrett, Bristol, GB;
Pieter Kok, Cardiff, GB;
Kae Nemoto, Tokyo, JP;
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
Nonlinear electromagnetic elements can efficiently implement quantum information processing tasks such as controlled phase shifts, non-demolition state detection, quantum subspace projections, non-demolition Bell state analysis, heralded state preparation, quantum non-demolition encoding, and fundamental quantum gate operations. Direct use of electromagnetic non-linearity can amplify small phase shifts and use feed forward systems in a near deterministic manner with high operating efficiency. Measurements using homodyne detectors can cause near deterministic projection of input states on a Hilbert subspace identified by the measurement results. Feed forward operation can then alter the projected state if desired to achieve a desired output state with near 100% efficiency.