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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Stimulated raman adiabatic passage ： ウィキペディア英語版 Stimulated raman adiabatic passage The Stimulated Raman adiabatic passage (STIRAP) process permits transfer of a population between two applicable quantum states via at least two coherent electromagnetic (light) pulses. These light pulses drive the transitions of the three level Ʌ atom or multilevel system.〔Unanyan, R., M. Fleischhauer, B. W. Shore, and K. Bergmann. "Robust creation and phase-sensitive probing of superposition states via stimulated Raman adiabatic passage (STIRAP) with degenerate dark states." Optics communications 155, no. 1 (1998): 144-154.〕 The process is a form of state-to-state coherent control. ==Population transfer in three level Ʌ atom== Consider the description of three level Ʌ atom having ground state $|g\_1\backslash rangle$ and $|g\_2\backslash rangle$ (for simplicity consider the energy of both ground states are same) and excited state $|e\backslash rangle$ respectively. Suppose in the beginning the total population is in the ground state $|g\_1\backslash rangle$. Here the logic for transformation of the population from ground state $|g\_1\backslash rangle$ to $|g\_2\backslash rangle$ is that initially the unpopulated states $|g\_2\backslash rangle$ and $|e\backslash rangle$ couple, afterward superposition of state $|g\_2\backslash rangle$ and $|e\backslash rangle$ couple to the state $|g\_1\backslash rangle$. Thereby a state is formed that permits the transformation of the population into state $|g\_2\backslash rangle$ without populating the excited state $|e\backslash rangle$. This process of transforming the population without populating the excited state is called the stimulated Raman adiabatic passage. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Stimulated raman adiabatic passage」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.