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:
Apr. 09, 1996
Filed:
Dec. 20, 1994
Allen D Parks, Fredericksburg, VA (US);
Kerry L Beaver, Fredericksburg, VA (US);
Other;
Abstract
A method and apparatus are provided for determining the number of photons in a single-mode, coherent microwave field. A plurality of Rydberg atoms are generated whereby each Rydberg atom has an energy state defined by a plurality of energy levels. The Rydberg atoms are passed through the microwave field one at a time. An exit state of the microwave field in terms of phase is measured as each Rydberg atom exits the microwave field. An exit energy level of each Rydberg atom exiting the microwave field is also detected. The number of Rydberg atoms exiting the microwave field in each of four measurement classes defined by the exit state and exit energy level are counted.