谷物 发表于 2025-3-23 10:30:45
he second-order correlation function can be measured from the correlation of light intensity at two separate times as a function of temporal distance, and the experiment was first conducted by Hanbury-Brown and Twiss. The second-order correlation function includes the information of the quantum prop大方不好 发表于 2025-3-23 16:37:54
Stanley Weeraratnametastable He has been condensed . The list of BEC atoms now includes molecular systems such as Rb. , Li2 and Cs2 . In order to cool the atoms to the required temperature (~200 nK) and densities (10.–10. cm.) for the observation of BEC a combination of optical cooling and evaporative cannexation 发表于 2025-3-23 20:37:25
http://reply.papertrans.cn/95/9416/941515/941515_13.pngRustproof 发表于 2025-3-24 00:22:47
Stanley Weeraratnadetected atoms is shown in Fig. 17.2. Other experiments have separated the atomic paths using gratings or a splitting due to a coherent transition between two internal states . Laser cooling of the atoms may be employed to increase the de Broglie wavelength of the atoms . InBlanch 发表于 2025-3-24 06:17:10
Stanley Weeraratna976)). Such point of view is related to the use of standard two beam interferometers detecting single photons. Moreover Dirac assumed an ideal case of maximum visibility interference fringes. The observation of interference pattern is related, from the point of view of quantum theory, to uncertainti格言 发表于 2025-3-24 10:28:52
http://reply.papertrans.cn/95/9416/941515/941515_16.png万神殿 发表于 2025-3-24 13:43:02
f coherent phonons in the gain medium and photons in a cavity or even chaotic behavior. Furthermore, we identify a range of Fröhlich constant and pump rate values where multiple stable dynamical regimes coexist. In such cases, the laser’s dynamics are uniquely determined by the initial conditions.Negotiate 发表于 2025-3-24 14:51:41
2211-4165 anners as well as students of agriculture. Environmentalists would also benefit by understanding the main issues related to land degradation discussed. .978-3-031-12137-1978-3-031-12138-8Series ISSN 2211-4165 Series E-ISSN 2211-4173我要威胁 发表于 2025-3-24 20:34:20
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Effects of Land Degradation,ely US$70 per person per year. In addition to the decrease in land productivity, floods and droughts, increase in poverty and lowered food security are effects of land degradation. Increase in poverty tends to affect the health, education and standard of living of millions of people mainly in Asia and Africa.