parametric down-conversion造句
例句與造句
- 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(duì)自發(fā)參量下轉(zhuǎn)換過(guò)程產(chǎn)生的光子對(duì)的量子態(tài)和光場(chǎng)的非糾纏態(tài)描述，分析了由自發(fā)參量下轉(zhuǎn)換過(guò)程產(chǎn)生的四光子的德布羅意波長(zhǎng)測(cè)量的實(shí)驗(yàn)，得到了與實(shí)驗(yàn)觀測(cè)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(diǎn)、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(chǎng)絕對(duì)校準(zhǔn)光電探測(cè)器靈敏度的新方法，著重推導(dǎo)了對(duì)自發(fā)參量下轉(zhuǎn)換過(guò)程中產(chǎn)生的單光子的探測(cè)概率和雙光子的符合速率，從而闡明了絕對(duì)測(cè)量光電探測(cè)器量子效率的原理.基于這一方法對(duì)光子計(jì)數(shù)型光電倍增管的響應(yīng)靈敏度進(jìn)行了測(cè)量，并將實(shí)驗(yàn)結(jié)果與常規(guī)方法測(cè)得的結(jié)果進(jìn)行了比較 - It's difficult to find parametric down-conversion in a sentence. 用parametric down-conversion造句挺難的