Using time-dependent multilevel approach （TDML）, this paper studies the dynamics of coherent control of Rydberg lithium atoms and demonstrates that Rydberg lithium atoms can be transferred to states of higher princi...Using time-dependent multilevel approach （TDML）, this paper studies the dynamics of coherent control of Rydberg lithium atoms and demonstrates that Rydberg lithium atoms can be transferred to states of higher principal quantum number by exposing them to specially designed frequency-chirped laser pulses. The population transfer from n=70 to n=75 states of lithium atoms with efficiency more than 90% is achieved by means of the sequential adiabatic rapid passages. The results agree well with the experimental ones and show that the coherent control of the population transfer from the lower n to the higher n states can be accomplished by the optimization of the chirping parameters and the intensity of laser field.展开更多
Using the time-dependent multilevel approach and the B-spline technique,populations of Rydberg lithium atoms in chirped microwave pulses are demonstrated.Firstly the populations of two energy levels are controlled by ...Using the time-dependent multilevel approach and the B-spline technique,populations of Rydberg lithium atoms in chirped microwave pulses are demonstrated.Firstly the populations of two energy levels are controlled by the microwave pulse parameters.Secondly the atoms experience the consequence 70s-71p-72s-73p-74s in a microwave field using optimized microwave field parameters.It is shown that the coherent control of the population transfer in the microwave field from the initial to the target states can be accomplished by optimizing the microwave field parameters.展开更多
基金Project supported by the National Natural Science Foundation of China(Grant No.10774039)the Basic Research Program of Education Bureau of Henan Province of China(Grant No.072300410130)
文摘Using time-dependent multilevel approach （TDML）, this paper studies the dynamics of coherent control of Rydberg lithium atoms and demonstrates that Rydberg lithium atoms can be transferred to states of higher principal quantum number by exposing them to specially designed frequency-chirped laser pulses. The population transfer from n=70 to n=75 states of lithium atoms with efficiency more than 90% is achieved by means of the sequential adiabatic rapid passages. The results agree well with the experimental ones and show that the coherent control of the population transfer from the lower n to the higher n states can be accomplished by the optimization of the chirping parameters and the intensity of laser field.
基金Supported by the National Natural Science Foundation of China under Grant No 10774039the Natural Science Foundation of Education Bureau of Henan Province under Grant Nos 2010C140002 and 2011A140009Research Planning Project of Basic and Advanced Technology of Henan Province under Grant No 112300410025.
文摘Using the time-dependent multilevel approach and the B-spline technique,populations of Rydberg lithium atoms in chirped microwave pulses are demonstrated.Firstly the populations of two energy levels are controlled by the microwave pulse parameters.Secondly the atoms experience the consequence 70s-71p-72s-73p-74s in a microwave field using optimized microwave field parameters.It is shown that the coherent control of the population transfer in the microwave field from the initial to the target states can be accomplished by optimizing the microwave field parameters.
