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We investigate the importance of the shielding of chemical photorates by molecular hydrogen photodissociation lines and the carbon photoionization continuum deep within models of photon dominated regions. In particular, the…

Astrophysics of Galaxies · Physics 2015-06-11 Richard P. Rollins , Jonathan M. C. Rawlings

We consider a model of a particle trapped in a harmonic optical trap but with the addition of a non-conservative radiation induced force. This model is known to correctly describe experimentally observed trapped particle statistics for a…

Statistical Mechanics · Physics 2019-05-14 Matthieu Mangeat , Yacine Amarouchene , Yann Louyer , Thomas Guérin , David S. Dean

Dissociative recombination of N$_2$H$^+$ is explored in a two-step theoretical study. In a first step, a diatomic (1D) rough model with frozen NN bond and frozen angles is adopted, in the framework of the multichannel quantum defect theory…

Instrumentation and Methods for Astrophysics · Physics 2023-08-16 J. Zs Mezei , M. A. Ayouz , A. Orbán , A. Abdoulanziz , D. Talbi , D. O. Kashinski , E. Bron , V. Kokoouline , I. F. Schneider

Optomechanical manipulation of nanoparticles enabling ultimate control over their 3D motion is nowadays one of the most highly demanded links between optics, biology, medicine, microfluidics, etc., paving the way for a plethora of emerging…

Optics · Physics 2020-01-08 D. A. Dolinina , A. S. Shalin , A. V. Yulin

We simulate the dynamics of H2+ and HD+ by direct solution of the time-dependent Schroedinger equation for the electronic and nuclear motion for the interaction of intense femtosecond pulses. On these timescales the rotational motion, even…

Atomic Physics · Physics 2007-05-23 J F McCann , Liang-You Peng , I D Williams , K T Taylor , D Dundas

We explore the distribution in space and time of a single-photon excitation shared by a network of dipole-dipole interacting atoms that are also coupled to a common photonic field mode. Time-averaged distributions reveal partial trapping of…

Quantum Physics · Physics 2025-08-06 Pritam Chattopadhyay , Avijit Misra , Saikat Sur , David Petrosyan , Gershon Kurizki

Between mirrors, the density of electromagnetic modes differs from the one in free space. This changes the radiation properties of an atom as well as the light forces acting on an atom. It has profound consequences in the strong-coupling…

Quantum Physics · Physics 2007-10-04 T. Puppe , I. Schuster , P. Maunz , K. Murr , P. W. H. Pinkse , G. Rempe

We develop a fully quantum mechanical methodology to describe the static properties and the dynamics of a single anharmonic vibrational mode interacting with a quantized infrared cavity field in the strong and ultrastrong coupling regimes.…

Chemical Physics · Physics 2020-06-22 Johan F. Triana , Federico J. Hernández , Felipe Herrera

The energy conversion of oxygenic photosynthesis is triggered by primary charge separation in proteins at the photosystem II reaction center. Here, we investigate the impacts of the protein environment and intramolecular vibrations on…

Chemical Physics · Physics 2018-08-23 Yuta Fujihashi , Masahiro Higashi , Akihito Ishizaki

There is generally no obvious evidence in any direct relation between photon blockade and atomic coherence. Here instead of only illustrating the photon statistics, we show an interesting relation between the steady-state photon blockade…

Quantum Physics · Physics 2017-04-19 Yang Zhang , Jun Zhang , Chang-shui Yu

We have demonstrated a new, accessible and economical technique, dubbed photostop, for producing high densities of trappable molecules. Direct measurements are presented of NO molecules produced with a narrow velocity distribution centered…

Chemical Physics · Physics 2013-08-12 Alexandre Trottier , David Carty , Eckart Wrede

We present studies of strong coupling in single-photon photoassociation of cesium dimers using an optical dipole trap. A thermodynamic model of the trap depletion dynamics is employed to extract absolute rate coefficents. From the…

Atomic Physics · Physics 2009-11-10 S. D. Kraft , M. Mudrich , M. U. Staudt , J. Lange , O. Dulieu , R. Wester , M. Weidemuller

For a molecule, the two-center interference and the molecular scattering phase of the electron are important for almost all the processes that may occur in a laser field. In this study, we investigate their effects in the transfer of linear…

Atomic Physics · Physics 2018-12-19 Hao Liang , Mu-Xue Wang , Xiang-Ru Xiao , Qihuang Gong , Liang-You Peng

We study resonant optical excitations of strongly-interacting Rydberg states of atoms in the presence of relaxations. We employ the quantum stochastic (Monte Carlo) wavefunctions to simulate the dissipative dynamics of tens of atoms in…

Quantum Physics · Physics 2013-06-25 David Petrosyan

Wave modes induced by cross-phase reshaping of a probe photon in the guiding structure of a periodic train of temporal pulses are investigated theoretically with emphasis on exact solutions to the wave equation for the probe. The study has…

Pattern Formation and Solitons · Physics 2021-09-16 Alain M. Dikande

Molecular hydrogen ions in weakly bound states close to the first dissociation threshold are attractive quantum sensors for measuring the proton-to-electron mass ratio and hyperfine-induced ortho-para mixing. The experimental accuracy of…

Atomic Physics · Physics 2022-09-23 A. D. Ochoa Franco , M. Beyer

In this work, we investigate the relative importance of electronic and phononic energy dissipation during the molecular adsorption of CO on Cu(110). Initial sticking probabilities as a function of impact energy for CO impinging at normal…

The collective interaction of electronic excitations with the electromagnetic field in atomic arrays can lead to reduced decay rates, forming subradiant states with applications in quantum information and memories. By including quantized…

Atomic Physics · Physics 2025-08-13 M. Eltohfa , F. Robicheaux

Understanding the ultrafast vibrational relaxation following photoexcitation of molecules in a condensed phase is essential to predict the outcome and improve the efficiency of photoinduced molecular processes. Here, the vibrational…

Chemical Physics · Physics 2025-02-18 Benedikt O Birgisson , Asmus Ougaard Dohn , Hannes Jónsson , Gianluca Levi

The way molecules absorb, transfer, and emit light can be modified by coupling them to optical cavities. The extent of the modification is often defined by the cavity-molecule coupling strength, which depends on the number of coupled…

Optics · Physics 2021-06-11 Adarsh B Vasista , Kishan S Menghrajani , William L Barnes
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