Quantum control of I2 wave packet localization in solid argon matrix

Abstract

Dynamics and energy release in benzene/Ar cluster dissociationThe effect of coupled nonreactive modes on laser control of quantum wave packet dynamics J. Chem. Phys. 111, 6864 (1999); 10.1063/1.479978Time-dependent wave packet study of the one atom cage effect in I 2 -Ar Van der Waals complexes A hybrid quantum/classical approach for treating the vibrational and translational motion of the I 2 molecule inside a cold Ar matrix is implemented in the control of vibrational wave packet localization on the excited ͑A͒ electronic surface of I 2 . Quantum control was performed in the weak-field regime at six different temperatures to examine thermal effects on the dynamics of I 2 inside the lattice and on the degree of control that can be achieved for this system. It was found in this study that an increase in temperature from 0 to 75 K leads to a moderate decrease in the degree of control achieved. The role played by I 2 rotation on control was also shown to be minimal under the conditions examined in this work.

Adiabatic transfer of population in a dense fluid: The role of dephasing statistics

“…Each cycle of Rabi oscillation contributes a phase change, and when the Rabi frequency exceeds the collision frequency, the sum of these phase changes can be very large. [46][47][48][49] Strong field driving is not easy in the case of a Morse oscillator, especially if one is interested in STIRAP controlled population transfer amongst the first three vibrational states of the ground ͑or any͒ electronic state, since the successive vibrational transition frequencies are near to each other and strong driving which causes power broadening will blur the difference between them. Also, because of anharmonicity, the fundamental STIRAP condition of zero transition moment between states ͉1͘ and ͉3͘, with nonzero transition moments between ͉1͘ and ͉2͘ and ͉2͘ and ͉3͘, is not strictly satisfied.…”

Vibrational relaxation of trapped molecules in solid matrices: OH(A Σ2+;v=1)/Ar

“…Such a wider temperature range has been considered in spin-lattice relaxation for HD in argon 18 and control of I 2 wave packet in argon. 12 We show the time evolution of energy transfer at 4 K during the early period ͑0-100 ps͒ of interaction in Fig. 4͑a͒ and over the wide period of 0-1 ns in Fig.…”

“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] Important quantities involved in such processes are energy relaxation time scales for molecule which range from millisecond to picosecond. One such process is the relaxation of vibrationally excited molecules trapped in a solid matrix at cryogenic temperatures.…”

“…19 The dynamics of guesthost interaction in the cage becomes complicated for hydrides due to the participation of rotational motion, which can accept a significant portion of the vibrational energy during energy transfer to the matrix. 12,[27][28][29][30][31] Due to significant attraction between hydrogen and host atoms, rotation can become hindered, in which case the host's librational motion and internal vibration of the hydrogen-to-host "bond" can play an important role in the vibrational relaxation process. Vibration-to-libration/rotation energy transfer becomes efficient when the librational/rotational motion steers the molecule toward the region of strong guest-host interaction for efficient perturbation of the vibrational motion, thus leading to strong vibration-to-rotation ͑VR͒ coupling.…”

Non-Markovian effects on quantum optimal control of dissipative wave packet dynamics

“…Optimal control within weak field regimes [19][20][21]25 leads to linearized pulse design equations that are expressed in terms of molecular response functions. Various approximate approaches to a bath have been implemented in the weak field design, and have been successfully applied to the creation of specified nonequilibrium distribution in the presence of dissipation.…”