English translation for "参量下转换"
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- parametric down-conversion
Related Translations:
参量经度: parametric longitude 参量电子计算机: parametric electronic computer 参量调制: parameter modulation 参量线性规划: parametric linear programming
- Example Sentences:
| 1. | And the spdc has also been widely studied for its entanglement of time , space , polarization , and energy
另外，参量下转换产生的光子对具有时间、空间、偏振、能量等多种纠缠，因而在理论和实验上都得到了广泛的研究。 | | 2. | Because spdc creates photons in pairs , if one photon is found in one arm of the twin - photon , we know there must exists a single - photon state in another arm . so , we can assure when the single - photon state generate without detecting it
其中，自发参量下转换因其成对的产生下转换光子，可以通过探测其中之一来确认另一个是否为单光子态，这样就可以在不破坏单光子的情况下确认单光子的存在。 | | 3. | 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 )
摘要采用对自发参量下转换过程产生的光子对的量子态和光场的非纠缠态描述，分析了由自发参量下转换过程产生的四光子的德布罗意波长测量的实验，得到了与实验观测相一致的结果。 | | 4. | 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 )
目前有多种方案可以制备单光子态，如直接将激光衰减至单光子水平、量子点、单荧光分子以及金刚石纳米颗粒中的n - v色心、腔qed及自发参量下转换等。 | | 5. | In order to get single - photon state and reconstruct its wigner function , the two aspects , spdc of pulse pumped nonlinear phase match type i bbo crystal and reconstruction of wigner function of quantum state , are studied in this thesis . 1
本文是单光子态制备及其wigner函数重构课题中的部分内容，主要包括两个方面内容，即脉冲抽运的类非共线相位匹配bbo晶体的自发参量下转换过程和利用量子层析摄影术重构光量子态的wigner函数。 | | 6. | In this thesis we discuss these three aspects in detail and our main research work is outlined as follows : in section 2 we first give a definition of entanglement and illustrate some distinctive qualities of entangled states , then explain how to describe entanglement of multi - particle quantum state . in section 3 we show many existing different schemes for preparation of entangled states by spontaneous parametric down conversation , cavity quantum electrodynamics and iron traps , moreover we present new schemes to prepare multi - atom entangled states as well as multi - cavity entangled states
在第二章中我们将给出纠缠态的定义和度量，研究纠缠态的一些特性，第三章中我们将系统介绍目前理论上利用自发参量下转换，通过腔量子电动力学和离子阱制备纠缠态的各种方案，以及在实验上的进展，并在论文中重点提出了利用原子和腔场相互作用来制备多原子纠缠态和多腔场纠缠态的方案。 | | 7. | 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
讨论了一种基于自发参量下转换双光子场绝对校准光电探测器灵敏度的新方法，着重推导了对自发参量下转换过程中产生的单光子的探测概率和双光子的符合速率，从而阐明了绝对测量光电探测器量子效率的原理.基于这一方法对光子计数型光电倍增管的响应灵敏度进行了测量，并将实验结果与常规方法测得的结果进行了比较 |
- Similar Words：
- "参量图像变换" English translation, "参量图像转换器" English translation, "参量稳频法" English translation, "参量系统" English translation, "参量下变频器" English translation, "参量线性规划" English translation, "参量线性规划法" English translation, "参量谐振" English translation, "参量荧光" English translation, "参量荧火" English translation
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