SYSTEM FOR OPTIMIZING ENTANGLEMENT STATE BETWEEN FREQUENCY MODES - National Institute of Information and Communications Technology

Title:

SYSTEM FOR OPTIMIZING ENTANGLEMENT STATE BETWEEN FREQUENCY MODES

Document Type and Number:

Japanese Patent JP3790819

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To provide a system for optimizing an entanglement state which is applicable to industry, and a quantum information and communications technology using such a kind of system based on an optical fiber or the like.
SOLUTION: The system for optimizing the entanglement state includes: a waveform shaping device to adjust the waveform of a laser beam from a pulsed laser; a nonlinear medium which transmits the laser beam outputted from the waveform shaping device and imparts a nonlinear effect thereto; a detector to detect the laser beam outputted from the nonlinear medium; and a control device which controls information including the entanglement state of the laser beam detected by the detector, feeds the information back to the waveform shaping device and obtains a desirable entanglement state by repeatedly optimizing the entanglement state.

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Inventors:

Masahiro Takeoka
Daisuke Fujishima
Fumihiko Shinari

Application Number:

JP2002158112A

Publication Date:

June 28, 2006

Filing Date:

May 30, 2002

Export Citation:

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Assignee:

National Institute of Information and Communications Technology

International Classes:

G02F1/35; G02F1/365; H04B10/00; H04B10/40; H04B10/50; H04B10/60; H04B10/85; (IPC1-7): G02F1/35; G02F1/365; H04B10/00; H04B10/04; H04B10/06; H04B10/14; H04B10/22; H04B10/26; H04B10/28

Other References:

藤島大輔他,フェムト秒パルス波形整形器を用いた非線形ファイバ光子数スクイージングおよび量子相関の最適化制御,電子情報通信学会技術研究報告,日本,電子情報通信学会,2001年 6月15日,LQE2001 16-30,p.35-36
Masahiro Takeoka et al.,Optimaization of ultrashort-pulse squeezingu by spectral filtering with the Fourier pulse-shaping ,Optics Letters,米国,IEEE,2001年10月15日,Vol.26, No.20,p.1592-1594

Attorney, Agent or Firm:

Hiroshi Kobayashi
Eiji Katayama
Junko Kobayashi
Kaoru Kuroda
Takayuki Hirose
Nobushi Furuhashi

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