We propose a continuously tunable method of sub-half-wavelength localization via the coherent control of the spontaneous emission of a four-level Y-type atomic system, which is coupled to three strong coupling fields ...We propose a continuously tunable method of sub-half-wavelength localization via the coherent control of the spontaneous emission of a four-level Y-type atomic system, which is coupled to three strong coupling fields including a standing-wave field together with a weak probe field. It is shown that the sub-half-wavelength atomic localization is realized for both resonance and off-resonance cases. Furthermore, by varying the probe detuning in succession, the positions of the two localization peaks are tuned continuously within a wide range of probe field frequencies, which provides convenience for the realization of sub-half-wavelength atomic localization experimentally.展开更多
We investigate the effect of decay-induced interference on photon correlation in a nearly equispaced three-level driven ladder atom.It is found that the combination of destructive interference and two-photon resonance...We investigate the effect of decay-induced interference on photon correlation in a nearly equispaced three-level driven ladder atom.It is found that the combination of destructive interference and two-photon resonance are responsible for the occurrence of nonclassical correlations.In addition,the bunching or antibunching behavior of the two emission processes can be controlled by the relative phase of the two applied fields attributed to the phase control spontaneous emission enhancement or cancellation.展开更多
This paper aims to obtain some ＂universal method and result＂ to quantitatively analyze the influence of contact resistance （CR） on OTFTs, which has not been reported up to now. This is partly achieved by means of ...This paper aims to obtain some ＂universal method and result＂ to quantitatively analyze the influence of contact resistance （CR） on OTFTs, which has not been reported up to now. This is partly achieved by means of the simulated method and the introduction of Rc/Rcho （the value of CR/on state channel resistance）. To do this, the OTFT formula from the Brown model is extended, and the parameter （errors carrier mobility/z, saturation voltage Vosat, etc.） caused by Rc are analyzed in detail. Then, the Rc/Rcho test method is emphatically demonstrated, and some meaningful conclusions are drawn. Based on the conclusion, it is the first time that a ＂universal method＂ of estimating the errors caused by Rc has been put forward. Experimental results further prove that the method is correct.展开更多
基金Project supported by the National Natural Science Foundation of China (Grant Nos. 11104163 and 11047011)the Science Foundation of Hubei Province,China (Grant No. 2010CDZ055)
文摘We propose a continuously tunable method of sub-half-wavelength localization via the coherent control of the spontaneous emission of a four-level Y-type atomic system, which is coupled to three strong coupling fields including a standing-wave field together with a weak probe field. It is shown that the sub-half-wavelength atomic localization is realized for both resonance and off-resonance cases. Furthermore, by varying the probe detuning in succession, the positions of the two localization peaks are tuned continuously within a wide range of probe field frequencies, which provides convenience for the realization of sub-half-wavelength atomic localization experimentally.
基金Supported by the National Natural Science Foundation of China under Grant No 11104163the Science Foundation of China Three Gorges University under Grant No KJ2011B019.
文摘We investigate the effect of decay-induced interference on photon correlation in a nearly equispaced three-level driven ladder atom.It is found that the combination of destructive interference and two-photon resonance are responsible for the occurrence of nonclassical correlations.In addition,the bunching or antibunching behavior of the two emission processes can be controlled by the relative phase of the two applied fields attributed to the phase control spontaneous emission enhancement or cancellation.
基金project supported by the Fujian Natural Science Foundation,China(No.2009J05146)
文摘This paper aims to obtain some ＂universal method and result＂ to quantitatively analyze the influence of contact resistance （CR） on OTFTs, which has not been reported up to now. This is partly achieved by means of the simulated method and the introduction of Rc/Rcho （the value of CR/on state channel resistance）. To do this, the OTFT formula from the Brown model is extended, and the parameter （errors carrier mobility/z, saturation voltage Vosat, etc.） caused by Rc are analyzed in detail. Then, the Rc/Rcho test method is emphatically demonstrated, and some meaningful conclusions are drawn. Based on the conclusion, it is the first time that a ＂universal method＂ of estimating the errors caused by Rc has been put forward. Experimental results further prove that the method is correct.
