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We study the control of quantum resonances in photonic crystals with electromagnetically induced transparency driven by microwave field. In addition to the control laser, the intensity and phase of the maser can alter the transmission and…

Atomic Physics · Physics 2015-06-05 Pankaj K. Jha , C. Y. Lee , C. H. Raymond Ooi

The phonon-induced dephasing dynamics in optically excited semiconductor quantum dots is studied within the frameworks of the independent Boson model and optimal control. We show that appropriate tailoring of laser pulses allows a complete…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Ulrich Hohenester , Georg Stadler

We present a microscopic theory for ultrafast control of solids with high-intensity terahertz frequency optical pulses. When resonant with selected infrared-active vibrations, these pulses transiently modify the crystal structure and lead…

Strongly Correlated Electrons · Physics 2014-07-15 Alaska Subedi , Andrea Cavalleri , Antoine Georges

We investigate the properties of a linear ion crystal in a combination of quadratic and quartic potentials. Both the discrete and the continuous model are employed to explore the homogeneity of a linear ion crystal by controlling the…

Atomic Physics · Physics 2022-01-25 Ming-shen Li , Yang Liu , Xin-Xin Rao , Peng-Fei Lu , Zhao Wang , Feng Zhu , Le Luo

When an electromagnetic transverse wave propagates through an inhomogeneous plasma so that its electric field has a component in the direction of the background density gradient, there appears a disbalance of charge in every plasma layer,…

Plasma Physics · Physics 2014-08-07 J. Vranjes

Dispersion relations govern wave behaviors, and tailoring them is a grand challenge in wave manipulation. We demonstrate inverse design of phononic dispersion using non-local interactions on one-dimensional spring-mass chains. For both…

Materials Science · Physics 2023-11-01 Arash Kazemi , Kshiteej J. Deshmukh , Fei Chen , Yunya Liu , Bolei Deng , Henry Chien Fu , Pai Wang

We theoretically investigate the effect of broken inversion symmetry on the generation and control of ultrafast currents in a transparent dielectric (SiO2) by strong femto-second optical laser pulses. Ab-initio simulations based on…

Previous experiments on MAST and other tokamaks have indicated that the level of fast ion redistribution can exceed that expected from classical diffusion and that this level increases with beam power. In this paper we present a…

We study strong field molecular ionization using few- (four to ten) cycle laser pulses. Employing a supercontinuum light source, we are able to tune the optical laser wavelength (photon energy) over a range of about $\sim$200 nm (500 meV).…

The qualitative nature (i.e. integrable vs. chaotic) of the translational dynamics of a three-level atom in an optical lattice is shown to be controllable by varying the relative laser phase of two standing wave lasers. Control is explained…

Quantum Physics · Physics 2009-11-07 Jiangbin Gong , Paul Brumer

Dynamical effects of non-conservative forces in long, defect free atomic wires are investigated. Current flow through these wires is simulated and we find that during the initial transient, the kinetic energies of the ions are contained in…

Mesoscale and Nanoscale Physics · Physics 2019-06-05 Brian Cunningham , Tchavdar N. Todorov , Daniel Dundas

We consider the process of atomic ionization driven by a laser pulse with varying ellipticity. We study distribution of the momenta of the photoelectrons, ionized by a strong laser field, emitted in the direction perpendicular to the…

Atomic Physics · Physics 2015-06-22 I. A. Ivanov

The body-centered cubic Coulomb crystal of ions in the presence of a uniform magnetic field is studied using the rigid electron background approximation. The phonon mode spectra are calculated for a wide range of magnetic field strengths…

High Energy Astrophysical Phenomena · Physics 2014-11-20 D. A. Baiko

Phase mixing of relativistic large amplitude nonlinear plasma wave in presence of a time independent space periodic ion density profile has been investigated. Inhomogeneous ion along with the relativistic variation of electron mass make the…

Plasma Physics · Physics 2018-02-14 Mithun Karmakar , Chandan Maity , Nikhil Chakrabarti

The periodic changes in the physical and chemical properties of the chemical elements are caused by the periodic change of the ionization energies, which are constant for each element that manifested in the Periodic Table. However, as has…

Quantum Physics · Physics 2021-06-02 R. Kh. Gainutdinov , A. I. Garifullin , M. A. Khamadeev , M. Kh. Salakhov

Coherent phonons can greatly vary light-matter interaction in semiconductor nanostructures placed inside an optical resonator on an ultrafast time scale. For an ensemble of quantum dots as active laser medium phonons are able to induce a…

Mesoscale and Nanoscale Physics · Physics 2018-09-27 D. Wigger , T. Czerniuk , D. E. Reiter , M. Bayer , T. Kuhn

Time crystals constitute a novel phase of matter defined by the spontaneous breaking of timetranslation symmetry. Here we present a scheme to realize a continuous-time crystal of the vibrational phonon in the normal mode of two coupled…

Quantum Physics · Physics 2026-04-30 Yi-Ling Zhan , Chun-Fu Liu , J. -T. Bu , K. -F Cui , S. -L. Su , L. -L. Yan , Gang Chen

We investigate the coherent control of the photo\-electron angular distribution in bichromatic atomic ionization. Neon is selected as target since it is one of the most popular systems in current gas-phase experiments with free-electron…

Atomic Physics · Physics 2018-01-31 E. V. Gryzlova , A. N. Grum-Grzhimailo , E. I. Staroselskaya , N. Douguet , K. Bartschat

While engineered quantum systems are a general route to the manipulation of multipartite quantum states, access in a physical system to a continuous quantum phase transition under sufficient control offers the possibility of an intrinsic…

Quantum Physics · Physics 2022-06-02 J. Zhang , B. T. Chow , S. Ejtemaee , P. C. Haljan

The paper examines superradiance in impurity crystals in the field of a coherent phonon wave excited by two ultrashort laser pulses via Raman scattering processes at the moment of preparation of the initial state of an ensemble of emitters.…

Optics · Physics 2020-03-12 A. P. Saiko
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