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Plasmonic nanoparticles provide an ideal environment for the enhancement of fluorescent emission. On the one hand, they locally amplify the electromagnetic fields, increasing the emitter excitation rate, and on the other hand, they provide…

光学 · 物理学 2022-01-17 Henrikh M. Baghramyan , Cristian Ciracì

The annual modulation signal observed by the DAMA-LIBRA Collaboration (D-L) may plausibly be explained as a consequence of energy deposited in the NaI(Tl) crystals by cosmic ray muons penetrating the detector. Delayed pulses in the…

天体物理仪器与方法 · 物理学 2011-02-07 David Nygren

The influence of an electron-vibrational coupling on the laser control of electron transport through a molecular wire that is attached to several electronic leads is investigated. These molecular vibrational modes induce an effective…

介观与纳米尺度物理 · 物理学 2007-05-23 Jörg Lehmann , Sigmund Kohler , Volkhard May , Peter Hänggi

The collective tunneling of a Wigner necklace - a crystal-like state of a small number of strongly interacting electrons confined to a suspended nanotube and subject to a double well potential - is theoretically analyzed and compared with…

介观与纳米尺度物理 · 物理学 2024-07-11 Dominik Szombathy , Miklós Antal Werner , Cătălin Paşcu Moca , Örs Legeza , Assaf Hamo , Shahal Ilani , Gergely Zaránd

A profusion of unbound, low-energy electrons creates a local electric field that reduces Coulomb potential and increases quantum tunneling probability for pairs of nuclei. Neutral beam-target experiments on deuterium-deuterium fusion…

等离子体物理 · 物理学 2021-06-25 Alfred Y. Wong , Alexander Gunn , Allan X. Chen , Chun-Ching Shih , Mason J. Guffey

The efficiency of extracting single atoms or molecules from an ultracold bosonic reservoir is theoretically investigated for a protocol based on lasers, coupling the hyperfine state in which the atoms form a condensate to another stable…

量子物理 · 物理学 2011-05-10 Stefano Zippilli , Bernd Mohring , Eric Lutz , Giovanna Morigi , Wolfgang Schleich

A quantum interference effect is discussed for subgap tunneling over a distance comparable to the coherence length, which is a consequence of ``advanced-advanced'' and ``retarded-retarded'' transmission modes [Altland and Zirnbauer, Phys.…

介观与纳米尺度物理 · 物理学 2007-11-06 S. Duhot , R. Mélin

The existing intense laser-based approaches for nuclear excitation offer ultrafast temporal resolution and high efficiency compared to traditional accelerator probes. However, controlling nuclear properties such as spin and magnetic moment…

核理论 · 物理学 2025-03-18 Zhi-Wei Lu , Hanxu Zhang , Tao Li , Mamutjan Ababekri , Xu Wang , Jian-Xing Li

Modern intense ultrafast pulsed lasers generate an electric field of sufficient strength to permit tunnel ionization of the valence electrons in atoms. This process is usually treated as a rapid succession of isolated events, in which the…

We proposed a new mechanism of LENR: cooperative processes in whole system -- nuclei+atoms+condensed matter can occur at smaller threshold then corresponding ones on free constituents. The cooperative processes can be induced and enhanced…

综合物理 · 物理学 2025-02-08 F. A. Gareev , I. E. Zhidkova

We examine the possibility that a metastable quantum state could experiment a phenomenon similar to thermal activation but at zero temperature. In order to do that we study the real-time dynamics of the reduced Wigner function in a simple…

量子物理 · 物理学 2007-05-23 Daniel Arteaga , Esteban Calzetta , Albert Roura , Enric Verdaguer

Optically trapped atoms in arrays of optical tweezers have emerged as a powerful platform for quantum information processing given the recent demonstrations of high-fidelity quantum logic gates and on-demand reconfigurable geometry. Both in…

量子物理 · 物理学 2024-11-01 Sivaprasad Omanakuttan , Vikas Buchemmavari , Michael J. Martin , Ivan H Deutsch

The self-organizing properties of nematic liquid crystals (LC) can be used to template carbon nanotubes (CNTs) on a macroscopic dimension. The nematic director field, coupled to the dispersed CNT long-axis, enables controlled director…

介观与纳米尺度物理 · 物理学 2015-05-13 Rajratan Basu , Germano S. Iannacchione

Simultaneous strong coherent pumping of the two transitions of a V-level atom with very differentdecay rates has been predicted to create almost perfect inversion on the narrower transition. Usingthe example of the blue and red transitions…

量子物理 · 物理学 2021-02-03 Christoph Hotter , David Plankensteiner , Helmut Ritsch

We have investigated non-dipole effects in the interaction of a hydrogen atom with elliptically polarized laser pulses of intensity 10$^{14}$ W/cm$^2$ with about 8 fs duration. The study was performed within the framework of a hybrid…

原子物理 · 物理学 2025-09-03 Vladimir S. Melezhik , Sara Shadmehri

Numerical simulations of the NLSE (or GPE) are presented demonstrating emission of short pulses of the matter (light) density formed in the course of tunneling in wave-guided light and/or trapped BEC. The phenomenon is observed under…

其他凝聚态物理 · 物理学 2015-05-13 G. Dekel , O. V. Farberovich , A. Soffer , V. Fleurov

Recent theoretical investigations have revealed unconventional transport mechanisms within high Brilliouin zones of two-dimensional superlattices. Electrons can navigate along channels we call superwires, gently guided without brute force…

介观与纳米尺度物理 · 物理学 2024-10-23 Anton Marius Graf , Ke Lin , MyeongSeo Kim , Joonas Keski-Rahkonen , Alvar Daza , Eric Heller

We study the driven tunneling of a one-dimensional charged particle confined to a rectangular double-well. The numerical simulation of the Schr\"odinger equation based on the Cranck-Nicholson finite-difference scheme, shows that the…

量子物理 · 物理学 2009-11-11 V. L. Golo , Yu. S. Volkov

A beamline dedicated to the production of laser-polarized radioactive beams has been constructed at ISOLDE, CERN. We present here different simulations leading to the design and construction of the setup, as well as technical details of the…

Laser cooled ions trapped in a linear Paul trap are long-standing ideal candidates for realizing quantum simulation, especially of many-body systems. The properties that contribute to this also provide the opportunity to demonstrate…

量子物理 · 物理学 2022-03-04 Pradip Laha , Lukáš Slodička , Darren W. Moore , Radim Filip