Title:
光子ロジックゲートの使用方法及び装置
Document Type and Number:
Japanese Patent JP4892560
Kind Code:
B2
Abstract:
A system, method, and apparatus for photon logic gates based on quantum switch, where a single or multiple quantum switches are utilized for dark resonance interactions in which three-color lasers interact with a four-level or five-level nonlinear optical medium composed of three ground states and one or two excited states through nondegenerate four-wave mixing processes. The photon logic mechanism is based on combination of single or multiple dark resonance-induced two-photon coherence swapping among the three closely spaced ground states through optical transitions via a common excited state. The two-photon coherence induced on the ground states is optically detected via nondegenerate four-wave mixing processes. The nondegenerate four-wave mixing generation is enhanced owing to dark resonance or electromagnetically induced transparency. The gating time and bandwidth of the present photon logic gate method is not limited by population relaxation time or carrier's lifetime, but phase decay time, where the phase decay time in general much faster than the population decay time in solids or semiconductors.
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Inventors:
Ham Byung Shun
Application Number:
JP2008541093A
Publication Date:
March 07, 2012
Filing Date:
March 07, 2007
Export Citation:
Assignee:
Inha-Industry Partnership Institute
International Classes:
G02F3/00; G02F1/35
Domestic Patent References:
| JPH0411229A | 1992-01-16 |
Foreign References:
| US20020015205A1 | 2002-02-07 | |||
| US20020021474A1 | 2002-02-21 |
Attorney, Agent or Firm:
Yoshimi Saigo