Dissipative dynamics of a system passing through a conical intersection: Ultrafast pump-probe observables Export

@article{citeulike:1544205, abstract = {The dynamics of a system incorporating a conical intersection, in the presence of a dissipative environment, is studied with the purpose of identifying observable ultrafast spectroscopic signatures. A model system consisting of two vibronically coupled electronic states with two nuclear degrees of freedom is constructed. Dissipation is treated by two different methods, Lindblad semigroup formalism and the surrogate Hamiltonian approach. Pump-probe experimental expectation values such as transient emission and transient absorption are calculated and compared to the adiabatic and diabatic population transfer. The ultrafast population transfer reflecting the conical intersection is not mirrored in transient absorption measurements such as the recovery of the bleach. Emission from the excited state can be suppressed on the ultrafast time scale, but the existence of a conical intersection is only one of the possible mechanisms that can provide ultrafast damping of emission. \©2005 American Institute of Physics}, author = {Gelman, David and Katz, Gil and Kosloff, Ronnie and Ratner, Mark A.}, citeulike-article-id = {1544205}, citeulike-linkout-0 = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JCPSA6000123000013134112000001&idtype=cvips&gifs=yes}, citeulike-linkout-1 = {http://link.aip.org/link/?JCP/123/134112}, citeulike-linkout-2 = {http://dx.doi.org/10.1063/1.2032968}, doi = {10.1063/1.2032968}, journal = {The Journal of Chemical Physics}, keywords = {coherent, control, quantum, quenching, theory}, number = {13}, posted-at = {2007-08-08 23:10:21}, priority = {2}, publisher = {AIP}, title = {Dissipative dynamics of a system passing through a conical intersection: Ultrafast pump-probe observables}, url = {http://dx.doi.org/10.1063/1.2032968}, volume = {123}, year = {2005} }

TY - JOUR ID - citeulike:1544205 L3 - citeulike-article-id:1544205 N2 - The dynamics of a system incorporating a conical intersection, in the presence of a dissipative environment, is studied with the purpose of identifying observable ultrafast spectroscopic signatures. A model system consisting of two vibronically coupled electronic states with two nuclear degrees of freedom is constructed. Dissipation is treated by two different methods, Lindblad semigroup formalism and the surrogate Hamiltonian approach. Pump-probe experimental expectation values such as transient emission and transient absorption are calculated and compared to the adiabatic and diabatic population transfer. The ultrafast population transfer reflecting the conical intersection is not mirrored in transient absorption measurements such as the recovery of the bleach. Emission from the excited state can be suppressed on the ultrafast time scale, but the existence of a conical intersection is only one of the possible mechanisms that can provide ultrafast damping of emission. ©2005 American Institute of Physics IS - 13 JF - The Journal of Chemical Physics TI - Dissipative dynamics of a system passing through a conical intersection: Ultrafast pump-probe observables PB - AIP VL - 123 KW - coherent KW - control KW - quantum KW - quenching KW - theory AU - Gelman, David AU - Katz, Gil AU - Kosloff, Ronnie AU - Ratner, Mark PY - 2005/// UR - http://dx.doi.org/10.1063/1.2032968 ER -