- 參量下轉(zhuǎn)換
- parametric: adj. 參(變)數(shù)的；參量的。
- down: down3 n. 1.(裝被、褥等用的)鴨絨 ...
- conversion: n. 1.變換，轉(zhuǎn)化，轉(zhuǎn)換；換算，換位。 2.(意見、信 ...
- parametric conversion: 參量轉(zhuǎn)換
- optical parametric conversion: 光參量變換
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parametric down-conversion中文什么意思
- 參量下轉(zhuǎn)換
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例句與用法
- Experimental results of four - photon de broglie wavelength measurement are analyzed based on a local description for the quantum state and optical field of photon pairs generated from spontaneous parametric down - conversion ( spdc )
摘要采用對自發(fā)參量下轉(zhuǎn)換過程產(chǎn)生的光子對的量子態(tài)和光場的非糾纏態(tài)描述，分析了由自發(fā)參量下轉(zhuǎn)換過程產(chǎn)生的四光子的德布羅意波長測量的實驗，得到了與實驗觀測相一致的結(jié)果。 - There are many ways to generate single - photon state , e . g . attenuated laser , quantum dot , pulsed excitation of a single dipole , single nitrogen - vacancy color center in a diamond nanocrystal , cavity - qed and spontaneous parametric down - conversion ( spdc )
目前有多種方案可以制備單光子態(tài)，如直接將激光衰減至單光子水平、量子點、單熒光分子以及金剛石納米顆粒中的n - v色心、腔qed及自發(fā)參量下轉(zhuǎn)換等。 - A new method of absolute calibration of photodetector sensitivity based on spontaneous parametric down - conversion ( spdc ) biphoton field is described . the process of spdc is studied theoretically . the single photon detection probability and two - photon coincidence probability are derived and the calibration principle for photodetectors is explained . an experimental system has been set up . the sensitivity of a photon - counting photomultiplier tube was measured , and the results were compared with those obtained using conventional method
討論了一種基于自發(fā)參量下轉(zhuǎn)換雙光子場絕對校準光電探測器靈敏度的新方法，著重推導了對自發(fā)參量下轉(zhuǎn)換過程中產(chǎn)生的單光子的探測概率和雙光子的符合速率，從而闡明了絕對測量光電探測器量子效率的原理.基于這一方法對光子計數(shù)型光電倍增管的響應靈敏度進行了測量，并將實驗結(jié)果與常規(guī)方法測得的結(jié)果進行了比較