We report experimental demonstration of population transfer via stimulated Raman adiabatic passage with a rare-earth-ion-doped crystal $({\mathrm{Pr}}^{3+}:{\mathrm{Y}}_{2}\mathrm{Si}{\mathrm{O}}_{5})$ . About 90% of population of a ground level is transferred to another ground level with two pulses whose width is shorter than the lifetime of the excited state. The dependence of transferred population on the delay time of the pulse sequence is also experimentally investigated. The delay-time dependence observed in our experiment is similar to that obtained by numerical simulation.We report experimental demonstration of population transfer via stimulated Raman adiabatic passage with a rare-earth-ion-doped crystal $({\mathrm{Pr}}^{3+}:{\mathrm{Y}}_{2}\mathrm{Si}{\mathrm{O}}_{5})$. About 90% of population of a ground level is transferred to another ground level with two pulses whose width is shorter than the lifetime of the excited state. The dependence of transferred population on the delay time of the pulse sequence is also experimentally investigated. The delay-time dependence observed in our experiment is similar to that obtained by numerical simulation.

Physical Review ANov 13, 200640 citations

Population transfer of a NaH molecule via stimulated Raman adiabatic passage

Jing-Bo Zai, Wei-Shen Zhan, Shuo Wang +2 more

Abstract The population transfer of a NaH molecule from the ground state X 1 Σ + to the target state A 1 Σ + via stimulated Raman adiabatic passage (STIRAP) is investigated. The results show that the intensity, delay time and detuning have a significant effect on population transfer. A large population transfer is observed with increased pump and Stokes intensity, especially when the pump and Stokes intensity match. Population transfer also depends on the delay time between the pump laser pulse and the Stokes laser pulse. The detuning of the two pulses influences the population transfer. Efficient population transfer can be realized under the resonant or two-photon resonant condition.Abstract The population transfer of a NaH molecule from the ground state X 1 Σ + to the target state A 1 Σ + via stimulated Raman adiabatic passage (STIRAP) is investigated. The results show that the intensity, delay time and detuning have a significant effect on population transfer. A large population transfer is observed with increased pump and Stokes intensity, especially when the pump and Stokes intensity match. Population transfer also depends on the delay time between the pump laser pulse and the Stokes laser pulse. The detuning of the two pulses influences the population transfer. Efficient population transfer can be realized under the resonant or two-photon resonant condition.

Laser PhysicsJun 30, 20163 citations

Non-adiabatic effects in population transfer in three-level systems

Nikolay V. Vitanov, Stig Stenholm

Optics CommunicationsJun 1, 199649 citations

Optimal population transfer using adiabatic rapid passage in the presence of drive-induced dissipation

Nilanjana Chanda, Pratik Patnaik, Rangeet Bhattacharyya

Adiabatic rapid passage (ARP) is extensively used to achieve efficient transfer or inversion of populations in quantum systems. Landau and Zener accurately estimated the transfer probability of ARP for a closed system and showed that this probability improved with higher drive amplitude. Recently, we found that, in open quantum systems, applying a strong drive can give rise to significant drive-induced dissipation (DID). Here, we investigate the effect of DID on the performance of ARP that is implemented using a linearly chirped pulse on a two-level system. From the Landau-Zener formula, the population transfer was known to be enhanced with increasing drive amplitude. However, here we show that, beyond a threshold value of the drive amplitude, the transfer probability is reduced because of the detrimental effect of DID. We show that the competition between the two processes results in an optimal behavior of the population transfer. We also propose a phenomenological model that helps explain such nonmonotonic behavior of the transfer. Using this model, we estimate the optimum time at which the maximum population transfer occurs. We extend the analysis for rectangular as well as Gaussian pulse profiles and conclude that a Gaussian pulse outperforms a rectangular pulse.Adiabatic rapid passage (ARP) is extensively used to achieve efficient transfer or inversion of populations in quantum systems. Landau and Zener accurately estimated the transfer probability of ARP for a closed system and showed that this probability improved with higher drive amplitude. Recently, we found that, in open quantum systems, applying a strong drive can give rise to significant drive-induced dissipation (DID). Here, we investigate the effect of DID on the performance of ARP that is implemented using a linearly chirped pulse on a two-level system. From the Landau-Zener formula, the population transfer was known to be enhanced with increasing drive amplitude. However, here we show that, beyond a threshold value of the drive amplitude, the transfer probability is reduced because of the detrimental effect of DID. We show that the competition between the two processes results in an optimal behavior of the population transfer. We also propose a phenomenological model that helps explain such nonmonotonic behavior of the transfer. Using this model, we estimate the optimum time at which the maximum population transfer occurs. We extend the analysis for rectangular as well as Gaussian pulse profiles and conclude that a Gaussian pulse outperforms a rectangular pulse.

arXiv:2301.10182Physical Review AJun 23, 20236 citations

Population transfer and pulse propagation in certain closed-loop systems

F. T. Hioe, C. E. Carroll

Physics Letters ASep 1, 19966 citations

We report experimental demonstration of population transfer via stimulated Raman adiabatic passage with a rare-earth-ion-doped crystal

({\mathrm{Pr}}^{3+}:{\mathrm{Y}}_{2}\mathrm{Si}{\mathrm{O}}_{5})

. About 90% of population of a ground level is transferred to another ground level with two pulses whose width is shorter than the lifetime of the excited state. The dependence of transferred population on the delay time of the pulse sequence is also experimentally investigated. The delay-time dependence observed in our experiment is similar to that obtained by numerical simulation.