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We investigated both numerically and experimentally the dynamics of individual ZnO nanowires immersed in an in-plane switching (IPS) 4-Cyano-4-pentylbiphenyl (5CB) liquid crystal cell under switching electric fields. Comparing the motion of…

Materials Science · Physics 2016-12-16 Yin Tao , Yiu Ho Tam

In the present paper, the impact of small Fermi energy on the selected parameters of the superconducting state in Ba$_{1-x}$K$_{x}$BiO$_{3}$ (BKBO) is studied at $x \in (0.3, 0.4, 0.5)$. This is done by employing the adiabatic and…

Due to the experimental time constraints of state of the art quantum simulations with trapped ions, the direct preparation of the ground state by adiabatically ramping the field of a transverse field Ising model becomes more and more…

Quantum Physics · Physics 2014-03-03 B. Yoshimura , W. C. Campbell , J. K. Freericks

In this work we study the effects of nonadiabatic external driving on the thermodynamics of an electronic system coupled to two electronic leads and to a phonon mode, with and without damping. In the limit of slow driving, we establish…

Statistical Mechanics · Physics 2022-06-03 Jakob Bätge , Amikam Levy , Wenjie Dou , Michael Thoss

The nonlinear Breit-Wheeler process is a fundamental phenomenon of strong-field quantum electrodynamics and is usually studied for classically prescribed laser backgrounds. Here we examine how the statistical properties of a squeezed…

High Energy Physics - Theory · Physics 2026-05-27 Xin Ge , Kai-Hong Zhuang , Pei-Lun He , Yue-Yue Chen

Coherence is a defining feature of quantum condensates. These condensates are inherently multimode phenomena and in the macroscopic limit it becomes extremely difficult to resolve populations of individual modes and the coherence between…

To simulate a 200 nm photoexcitation in cyclobutanone to the n-3s Rydberg state, classical trajectories were excited from a Wigner distribution to the singlet state manifold based on excitation energies and oscillator strenghts. Twelve…

We develop a first-principles simulation method for attosecond time-resolved photoelectron spectroscopy. This method enables us to directly simulate the whole experimental processes, including excitation, emission and detection on equal…

Atomic Physics · Physics 2018-08-01 Shunsuke A. Sato , Hannes Hübener , Angel Rubio , Umberto De Giovannini

The dissociation dynamics of the $\tilde{A}$-state of ammonia have been studied using a resonant multiphoton ionisation probe in a photoelectron spectroscopy experiment. The use of a resonant intermediate in the multiphoton ionisation…

Recently, condensed matter and atomic experiments have reached a length-scale and temperature regime where new quantum collective phenomena emerge. Finding such physics in systems of photons, however, is problematic, as photons typically do…

Other Condensed Matter · Physics 2007-08-01 Andrew D. Greentree , Charles Tahan , Jared H. Cole , L. C. L. Hollenberg

Quantum information measures are used to study the quantum phase diagrams of the two-level Dicke model including the atomic dipole-dipole interaction, for a finite number of particles, with and without the rotating-wave approximation, which…

Quantum Physics · Physics 2026-03-25 S. Cordero , E. Nahmad-Achar , O. Castaños , R. López-Peña

A mesoscopic, mixed particle- and field-based Brownian dynamics methodology for the simulation of entangled polymer melts has been developed. Polymeric beads consist of several Kuhn segments, and their motion is dictated by the Helmholtz…

Soft Condensed Matter · Physics 2017-03-28 Georgios G. Vogiatzis , Grigorios Megariotis , Doros N. Theodorou

We study a minimal model of collective light emission from an incoherently driven ensemble of atoms where incoherent drive is applied to only a subset of the atoms and show that both the linewidth and the photon statistics can be controlled…

Quantum Physics · Physics 2026-05-21 Oksana Chelpanova , Martino Stefanini , Dusan Sarenac , Tim Thomay , Jamir Marino

Nonlinear optical phenomena such as parametric amplification and frequency conversion are typically driven by external optical fields. Free electrons can also act as electromagnetic sources, offering unmatched spatial precision. Combining…

Mesoscale and Nanoscale Physics · Physics 2025-08-04 Leila Prelat , Eduardo J. C. Dias , F. Javier García de Abajo

We study the frequency-resolved density response of a photon Bose-Einstein condensate coupled to a bath of dye molecules by time-periodic driving. By monitoring the photon number dynamics for different drive frequencies, we obtain the…

We analyze the role of coherent, non-perturbative system-bath interactions in a photosynthetic heat engine. Using the reaction-coordinate formalism to describe the vibrational phonon-environment in the engine, we analyze the efficiency…

Chemical Physics · Physics 2018-09-19 Melina Wertnik , Alex Chin , Franco Nori , Neill Lambert

We calculate the electronic relaxation of a single electron in a quantum dot with two electronic orbital states, and with the electronic coupling to the longitudinal optical modes of the lattice vibrations included in the multiple…

Condensed Matter · Physics 2007-05-23 K. Kral , Z. Khas , P. Zdenek

We present theoretical and experimental analysis of an interferometric measurement of the {\it in-situ} phase drop across and current flow through a rotating barrier in a toroidal Bose-Einstein condensate (BEC). This experiment is the…

We show that low-energy spectral features in the cuprates can be separated into different components by the measurement of the recombination dynamics of different low-energy excitations in real-time using femtosecond laser spectroscopy.…

Superconductivity · Physics 2009-10-31 D. Mihailovic , J. Demsar , R. Hudej , V. V. Kabanov , T. Wolf , J. Karpinski

We investigate the dynamics of single- and multi-photon emission from detuned strongly coupled systems based on the quantum-dot-photonic-crystal resonator platform. Transmitting light through such systems can generate a range of…