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Ultrafast all optical switching via tunable Fano interference[J]. PHYSICS, 2006, 35(02): 100-102.
Citation: Ultrafast all optical switching via tunable Fano interference[J]. PHYSICS, 2006, 35(02): 100-102.
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Ultrafast all optical switching via tunable Fano interference

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  • Quantum coherence and interference are introduced briefly, as well as recent theoretical progress. A GaAs/AlxGa1-xAs asymmetric double quantum well structure with Fano-type tunneling induced quantum interference is proposed, wherein a control light beam can be used to suppress quantum interference and modify the propagation of an optical signal. This phenomenon can be used to realize a broadband ultra-fast optical switch.
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