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Light-induced conical intersections (LICIs) can be formed both by standing or by running laser waves. The position of a LICI is determined by the laser frequency while the laser intensity controls the strength of the nonadiabatic coupling.…

Atomic and Molecular Clusters · Physics 2016-07-11 András Csehi , Gábor J. Halász , Lorenz S. Cederbaum , Ágnes Vibók

We consider an adiabatic population transfer process that resembles the well established stimulated Raman adiabatic passage (STIRAP). In our system, the states have nonzero angular momentums $J$, therefore, the coupling laser fields induce…

Quantum Physics · Physics 2009-11-10 A. Karpati , Z Kis

We demonstrate theoretically the possibility of optimal control of light propagation and exciton transfer in arrays constructed of subnanometer sized noble-metal clusters by using phase-shaped laser pulses and analyze the mechanism…

Atomic and Molecular Clusters · Physics 2018-03-19 Polina G. Lisinetskaya , Roland Mitric

A three-level atom in a $\Lambda$ configuration trapped in an optical cavity forms a basic unit in a number of proposed protocols for quantum information processing. Through control with an appropriate laser, this system allows for…

Quantum Physics · Physics 2010-07-13 Joyee Ghosh , R. Ghosh , Deepak Kumar

The chirped-pulse interaction in the adiabatic coupling regime induces cyclic permutations of the energy states of a three-level system in the $V$-type configuration, which process is known as the three-level chirped rapid adiabatic…

Atomic Physics · Physics 2016-08-24 Yunheung Song , Han-gyeol Lee , Hanlae Jo , Jaewook Ahn

When a molecule is exposed to a laser field, all field-free vibrational states become resonances, with complex quasi energies calculated using Floquet theory. There are many ways to produce the coalescences of pairs of such quasi energies,…

Quantum Physics · Physics 2015-05-27 Roland Lefebvre , Amine Jaouadi , Osman Atabek

Energy transfer during molecular collisions on metal surfaces plays a pivotal role in a host of critical interfacial processes. Despite significant efforts, our understanding of relevant energy transfer mechanisms, even in an…

Chemical Physics · Physics 2025-03-24 Gang Meng , Bin Jiang

A new perspective on how to manipulate molecules by means of very strong laser pulses is emerging with insights from the so-called light-induced potentials, which are the adiabatic potential energy surfaces of molecules severely distorted…

Chemical Physics · Physics 2016-03-03 Bo Y. Chang , Ignacio R. Sola , Seokmin Shin

The superadiabatic quantum driving, producing a perfect adiabatic transfer on a given Hamitonian by introducing an additional Hamiltonian, is theoretically analysed for transfers within a three-level system. Our starting point is the…

Quantum Physics · Physics 2016-11-18 Luigi Giannelli , Ennio Arimondo

Real-time simulations of laser-driven electron dynamics contain information about molecular optical properties through all orders in response theory. These properties can be extracted by assuming convergence of the power series expansion of…

We present an algebraic method for treating molecular vibrations in the Morse potential perturbed by an external laser field. By the help of a complete and normalizable basis we transform the Schr\"{o}dinger equation into a system of…

Quantum Physics · Physics 2009-11-07 Balazs Molnar , Peter Foldi , Mihaly G. Benedict , Ferenc Bartha

We investigate two well-known approaches for extending the fewest switches surface hopping (FSSH) algorithm to periodic time-dependent couplings. The first formalism acts as if the instantaneous adiabatic electronic states were standard…

Chemical Physics · Physics 2019-10-07 Zeyu Zhou , Hsing-Ta Chen , Abraham Nitzan , Joseph Eli Subotnik

We show here that due to non-adiabatic couplings in decaying systems applying the same time-dependent protocol in the forward and reverse direction to the same mixed initial state leads to different final pure states. In particular, in…

Quantum Physics · Physics 2013-02-07 Ido Gilary , Alexei A. Mailybaev , Nimrod Moiseyev

We demonstrate a method of adiabatic population transfer from a single quantum state into a coherent superposition of states. The transfer is executed with femtosecond pulses, spectrally shaped in simple and intuitive manner, which does not…

Quantum Physics · Physics 2015-05-14 S. Zhdanovich , E. A. Shapiro , J. W. Hepburn , M. Shapiro , V. Milner

A novel laser cooling mechanism was recently demonstrated using a narrow-linewidth optical transition. Counter-propagating laser beams are swept in frequency to cause adiabatic transfer between a ground state and excited state, and Doppler…

Atomic Physics · Physics 2019-09-04 Graham P. Greve , Baochen Wu , James K. Thompson

Laser excitation pulses that lead to perfect adiabatic state transfer in an ensemble of three-level ladder atoms lead to highly entangled states of many atoms if their highest excited state is subject to Rydberg blockade. Solution of the…

Quantum Physics · Physics 2018-08-29 Tahereh Abad , Klaus Mølmer

The influence of photon-momentum recoil on adiabatic population transfer in an atomic three-level lambda system is studied. It is shown that the Doppler frequency shifts, due to atomic motion can play an important role in adiabatic…

Quantum Physics · Physics 2016-11-03 R. G. Unanyan

Resonant dissipation-enabled adiabatic quantum state transfer processes between the polarization degrees of freedom of a single photon wave packet and quantum emitters are discussed. These investigations generalize previous work [N.…

Quantum Physics · Physics 2021-11-16 Marvin Gajewski , Thorsten Haase , Gernot Alber

Floquet engineering offers a path to optically-controlled materials, but experimental implementations have frequently relied on femtosecond pulses to achieve the high peak fields required to maximise interactions and obtain a measurable…

Questions are raised about certain experimental and theoretical claims that atoms may be stabilized into their bound states, and prevented from achieving full ionization, by the application of adiabatic, ultraintense, high-frequency laser…

Atomic Physics · Physics 2009-09-29 Sydney Geltman , Mircea Fotino