by the National Natural Science Foundation of China under Grant Nos 10975046 and 10773017;the National Basic Research Program of China(2009CB824800).
We examine the theory of generation order parameters.Three kinds of generation order parameters are introduced,which describe the production of high-energyγphotons in a cascade process scenario.We find a correlation ...
Supported by the National Natural Science Foundation of China under Grant Nos 10935001, 10973002 and 10833003, and the National Basic Research Program of China under Grant No 2009CB824800.
Though pulsars spin regularly, the differences between the observed and predicted ToA (tune of arrival), known as "timing noise", can still reach a few milliseconds or more. We try to understand the noise in this ...
Supported by the National Natural Science Foundation of China under Grant No 10873011, and the Program for Science and Technology Innovation Talents in the Universities of the Henan Province.
Anomalous x-ray pulsars (AXPs) and soft gamma-ray repeaters (SCRs) are believed to be candidates for magnetars, and they are powered by the decay of ultra-strong magnetic fields of〉 1014 C. From the modified spin...
Supported by the National Natural Science Foundation of China with Grant No 10704030.
A simple model for the direct ionization and transfer ionization probabilities in A^2++He collisions in a wide projectile energy range is proposed based on the Bohr-Lindhard model and the classical statistical model...
A symmetrical π-shaped metamaterial is investigated. Numerical simulations exhibit the negative-refractive property of this structure. The complex refractive index n, wave impedance z, effective permittivity ε and e...
An analytical expression for the average intensity of four-petal Gaussian beams in turbulent atmosphere is derived. Studies show that in turbulent atmosphere, the contour lines of four-petal Gaussian beams with lower ...
Supported by the National Natural Science Foundation of China under Grant Nos 60478014 and 60272075.
We investigate the reduction of the group velocity propagation resulting from the steep change of the refractive index by the coherent population oscillation in erbium-doped optical fibre. The largest delay is measure...
Supported by the National Natural Science Foundation of China under Grant Nos 10474095 and 60625405
Excitation power-dependent micro-photoluminescence spectra and photon-correlation measurement are used to study the optical properties and photon statistics of single InAs quantum dots. Exciton and biexciton emissions...
Supported by the National Natural Science Foundation of China under Grant Nos 10574052 and 60778005.
We present a realistic and efficient scheme for sub-half-wavelength atom localization. This scheme is based on the phase-dependent electromagnetically induced transparency in a four-level system in the double-A config...
Supported by the National Natural Science Foundation of China under Grant Nos 10475056 and 10775097.
Based on our previous study [Chin. Phys. Lett. 24 (2007) 2238] in which the Fresnel operator corresponding to classical Fresnel transform was introduced, we derive the fractional Fourier transformation operator, and...