Invention Grant
- Patent Title: Generator of polarization entangled photon pairs and method of generating the same
- Patent Title (中): 发生器的偏振纠缠光子对及其产生方法
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Application No.: US13376107Application Date: 2010-06-03
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Publication No.: US08488231B2Publication Date: 2013-07-16
- Inventor: Ryosuke Shimizu , Keiichi Edamatsu
- Applicant: Ryosuke Shimizu , Keiichi Edamatsu
- Applicant Address: JP Kawaguchi-shi
- Assignee: Japan Science and Technology Agency
- Current Assignee: Japan Science and Technology Agency
- Current Assignee Address: JP Kawaguchi-shi
- Agency: Westerman, Hattori, Daniels & Adrian, LLP
- Priority: JP2009-134293 20090603
- International Application: PCT/JP2010/059461 WO 20100603
- International Announcement: WO2010/140661 WO 20101209
- Main IPC: G02F1/35
- IPC: G02F1/35 ; H04L9/00
Abstract:
A wavelength-multiplexed polarization entangled photon pair generator (1) includes: a pump light source (2); a polarization entangled photon pair generating body (4) on which pump light (3) outputted from the pump light source (2) falls; and a spectrometer (7) on which a wavelength-multiplexed parametric photon pair (5) outputted from the polarization entangled photon pair generating body 4 falls. The polarization entangled photon pair generating body (4) made of a nonlinear optical crystal (11) generates wavelength-multiplexed photon pairs by subjecting the pump light 3 to type II phase matching. As a nonlinear optical crystal 11, lithium tantalate of periodically poled structure (11A) can be used, and as a spectrometer (7), an arrayed-waveguide grating can be used. Wavelength-multiplexed polarization entangled photon pairs (5) can thus be generated with simple equipment.
Public/Granted literature
- US20120134377A1 GENERATOR OF POLARIZATION ENTANGLED PHOTON PAIRS AND METHOD OF GENERATING THE SAME Public/Granted day:2012-05-31
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