Classifying researchers＇ work according to the quality of their publications rather than the quantity of their publications is an important issue. To this end we introduce a new measure, the ＂percentage range＂ or A...Classifying researchers＇ work according to the quality of their publications rather than the quantity of their publications is an important issue. To this end we introduce a new measure, the ＂percentage range＂ or A-index, which provides a qualitative evaluation of a researchers＇ productivity. The percentage range depends to a great extent on the number of single-author published papers and their citations. It is to be a new index to be considered along with the h-index. The combined factors have the advantage of making clearer the innovation of the individual authors. The resultant percentage range gives a reduced impact on its numerical value for authors who gain citations by adding their names on multi-author papers. It is shown that various dimensions of ethical integrity and originality are clarified by the new index. The important scenarios arising from this analysis are demonstrated with examples, The great differences between the new percentage range and old h-index come from the percentage range＇s emphasis on considering the whole work of an author, including the significance of the author＇s single-author papers as opposed to multiple-author contributions. This emphasis is demonstrated.展开更多
We exploit a scheme to obtain a long-lived entanglement using a driven central spin interacting with an antiferromagnetic spin bath. Our numerical results show the effects of different parameters on the population inv...We exploit a scheme to obtain a long-lived entanglement using a driven central spin interacting with an antiferromagnetic spin bath. Our numerical results show the effects of different parameters on the population inversion and the entanglement dynamics in terms of the linear entropy. It is shown that the long-lived entanglement is an intriguing result corresponding to the collapse region of the atomic inversion. As illustration, we examine the long-time interaction of the entanglement under the resonance and off-resonance regimes.展开更多
In the context of quantum information,we investigate extensively some important classes of a general form of a two-qubit system under Lorentz transformation.It is shown Lorentz transformation causes a decay of entangl...In the context of quantum information,we investigate extensively some important classes of a general form of a two-qubit system under Lorentz transformation.It is shown Lorentz transformation causes a decay of entanglement and consequently information loses.On the other hand,it generates entangled states between systems prepared initially in a separable states.The partial entangled states are more robust under Lorentz transformation than maximally entangled states.Therefore the rate of information lose is larger for maximum entangled states compared with that for partially entangled states.展开更多
The dynamics of the skew information (SI) is investigated for a single Cooper Pair Box (CPB) interacting with a single cavity field. By suitably choosing the system parameters and precisely controlling the dynamics, n...The dynamics of the skew information (SI) is investigated for a single Cooper Pair Box (CPB) interacting with a single cavity field. By suitably choosing the system parameters and precisely controlling the dynamics, novel connection is found between the SI and entanglement generation. It is shown that SI can be increased and reach its maximum value either by increasing the number of photons inside the cavity or considering the far off-resonant case.The number of oscillations of SI is increased by decreasing this ratio between the Josephson junction capacity and the gate capacity. This leads to significant improvement of the travelling time between the maximum and minimum values.展开更多
文摘Classifying researchers＇ work according to the quality of their publications rather than the quantity of their publications is an important issue. To this end we introduce a new measure, the ＂percentage range＂ or A-index, which provides a qualitative evaluation of a researchers＇ productivity. The percentage range depends to a great extent on the number of single-author published papers and their citations. It is to be a new index to be considered along with the h-index. The combined factors have the advantage of making clearer the innovation of the individual authors. The resultant percentage range gives a reduced impact on its numerical value for authors who gain citations by adding their names on multi-author papers. It is shown that various dimensions of ethical integrity and originality are clarified by the new index. The important scenarios arising from this analysis are demonstrated with examples, The great differences between the new percentage range and old h-index come from the percentage range＇s emphasis on considering the whole work of an author, including the significance of the author＇s single-author papers as opposed to multiple-author contributions. This emphasis is demonstrated.
文摘We exploit a scheme to obtain a long-lived entanglement using a driven central spin interacting with an antiferromagnetic spin bath. Our numerical results show the effects of different parameters on the population inversion and the entanglement dynamics in terms of the linear entropy. It is shown that the long-lived entanglement is an intriguing result corresponding to the collapse region of the atomic inversion. As illustration, we examine the long-time interaction of the entanglement under the resonance and off-resonance regimes.
文摘In the context of quantum information,we investigate extensively some important classes of a general form of a two-qubit system under Lorentz transformation.It is shown Lorentz transformation causes a decay of entanglement and consequently information loses.On the other hand,it generates entangled states between systems prepared initially in a separable states.The partial entangled states are more robust under Lorentz transformation than maximally entangled states.Therefore the rate of information lose is larger for maximum entangled states compared with that for partially entangled states.
文摘The dynamics of the skew information (SI) is investigated for a single Cooper Pair Box (CPB) interacting with a single cavity field. By suitably choosing the system parameters and precisely controlling the dynamics, novel connection is found between the SI and entanglement generation. It is shown that SI can be increased and reach its maximum value either by increasing the number of photons inside the cavity or considering the far off-resonant case.The number of oscillations of SI is increased by decreasing this ratio between the Josephson junction capacity and the gate capacity. This leads to significant improvement of the travelling time between the maximum and minimum values.
