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. 01, 2007
Filed:
Jan. 28, 2003
Shigeki Takeuchi, Sapporo, JP;
Shigeki Takeuchi, Sapporo, JP;
Abstract
An entangled photon pair generating apparatus has a first definite polarization photon pair generating apparatus for generating a first definite polarization photon pair beam according to an incident pump beam, a wave plate for rotating by 90 degrees a plane of polarization of the first definite polarization photon pair beam emitted from the first definite polarization photon pair generating apparatus, and a second definite polarization photon pair generating apparatus for generating a second definite polarization photon pair beam according to the incident pump beam. They are adjacently placed in order along an optical axis of the incident pump beam.
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