A model study of assisted adiabatic transfer of population in the presence of collisional dephasing

Masuda, Shumpei

doi:10.1063/1.4922779

Title: A model study of assisted adiabatic transfer of population in the presence of collisional dephasing

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Abstract

Previous studies have demonstrated that when experimental conditions generate non-adiabatic dynamics that prevents highly efficient population transfer between states of an isolated system by stimulated Raman adiabatic passage (STIRAP), the addition of an auxiliary counter-diabatic field (CDF) can restore most or all of that efficiency. This paper examines whether that strategy is also successful in a non-isolated system in which the energies of the states fluctuate, e.g., when a solute is subject to collisions with solvent. We study population transfer in two model systems: (i) the three-state system used by Demirplak and Rice [J. Chem. Phys. 116, 8028 (2002)] and (ii) a four-state system, derived from the simulation studies of Demirplak and Rice [J. Chem. Phys. 125, 194517 (2006)], that mimics HCl in liquid Ar. Simulation studies of the vibrational manifold of HCl in dense fluid Ar show that the collision induced vibrational energy level fluctuations have asymmetric distributions. Representations of these asymmetric energy level fluctuation distributions are used in both models (i) and (ii). We identify three sources of degradation of the efficiency of STIRAP generated selective population transfer in model (ii): too small pulse areas of the laser fields, unwanted interference arising from use of strong fields, andmore »« less

Authors:

Masuda, Shumpei ^[1]

QCD Labs, Department of Applied Physics, Aalto University, Aalto 00076 (Finland)

Publication Date:: Sun Jun 28 00:00:00 EDT 2015

OSTI Identifier:: 22490839

Resource Type:: Journal Article

Journal Name:: Journal of Chemical Physics

Additional Journal Information:: Journal Volume: 142; Journal Issue: 24; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-9606

Country of Publication:: United States

Language:: English

Subject:: 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ASYMMETRY; COLLISIONS; CONTROL; DISTRIBUTION; EFFICIENCY; ENERGY LEVELS; FLUCTUATIONS; LIQUIDS; PULSES; SIMULATION; SOLVENTS

Citation Formats


                    Masuda, Shumpei, and Rice, Stuart A., E-mail: s-rice@uchicago.edu. A model study of assisted adiabatic transfer of population in the presence of collisional dephasing.  United States: N. p., 2015. 
        Web.  doi:10.1063/1.4922779.

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                    Masuda, Shumpei, & Rice, Stuart A., E-mail: s-rice@uchicago.edu. A model study of assisted adiabatic transfer of population in the presence of collisional dephasing.  United States.  https://doi.org/10.1063/1.4922779

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                    Masuda, Shumpei, and Rice, Stuart A., E-mail: s-rice@uchicago.edu. 2015.  
        "A model study of assisted adiabatic transfer of population in the presence of collisional dephasing".  United States.  https://doi.org/10.1063/1.4922779.

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@article{osti_22490839,

  title        = {A model study of assisted adiabatic transfer of population in the presence of collisional dephasing},

  author       = {Masuda, Shumpei and Rice, Stuart A., E-mail: s-rice@uchicago.edu},

  abstractNote = {Previous studies have demonstrated that when experimental conditions generate non-adiabatic dynamics that prevents highly efficient population transfer between states of an isolated system by stimulated Raman adiabatic passage (STIRAP), the addition of an auxiliary counter-diabatic field (CDF) can restore most or all of that efficiency. This paper examines whether that strategy is also successful in a non-isolated system in which the energies of the states fluctuate, e.g., when a solute is subject to collisions with solvent. We study population transfer in two model systems: (i) the three-state system used by Demirplak and Rice [J. Chem. Phys. 116, 8028 (2002)] and (ii) a four-state system, derived from the simulation studies of Demirplak and Rice [J. Chem. Phys. 125, 194517 (2006)], that mimics HCl in liquid Ar. Simulation studies of the vibrational manifold of HCl in dense fluid Ar show that the collision induced vibrational energy level fluctuations have asymmetric distributions. Representations of these asymmetric energy level fluctuation distributions are used in both models (i) and (ii). We identify three sources of degradation of the efficiency of STIRAP generated selective population transfer in model (ii): too small pulse areas of the laser fields, unwanted interference arising from use of strong fields, and the vibrational detuning. For both models (i) and (ii), our examination of the efficiency of STIRAP + CDF population transfer under the influence of the asymmetric distribution of the vibrational energy fluctuations shows that there is a range of field strengths and pulse durations under which STIRAP + CDF control of population transfer has greater efficiency than does STIRAP generated population transfer.},

  doi          = {10.1063/1.4922779},

  url          = {https://www.osti.gov/biblio/22490839},
  journal      = {Journal of Chemical Physics},

  issn         = {0021-9606},

  number       = 24,

  volume       = 142,

  place        = {United States},

  year         = {Sun Jun 28 00:00:00 EDT 2015},

  month        = {Sun Jun 28 00:00:00 EDT 2015}

}

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