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Topological structure has been extensively studied and confirmed in highly correlated condensed matter physics. We explore the gravitational waves emitted from binary neutron star mergers using the pseudoconformal model for dense nuclear…

Nuclear Theory · Physics 2021-07-07 Wen-Cong Yang , Yong-Liang Ma , Yue-Liang Wu

The role of spontaneous emission in the interaction between a two-level atom and a pumped micro-cavity in the strong coupling regime is discussed in this paper. Especially, using a quantum Monte-Carlo simulation, we investigate atomic…

Atomic Physics · Physics 2015-05-19 Zhen Fang , Rui Guo , Xiaoji Zhou , Xuzong Chen

Maximally symmetric curved-brane solutions are studied in dilatonic braneworld models which realise the self-tuning of the effective four-dimensional cosmological constant. It is found that no vacua in which the brane has de Sitter or…

High Energy Physics - Theory · Physics 2019-04-01 Jewel Kumar Ghosh , Elias Kiritsis , Francesco Nitti , Lukas T. Witkowski

High-harmonic generation (HHG) in two-dimensional materials offers a compelling route toward compact extreme ultraviolet sources and probing electron dynamics on the attosecond scale. However, achieving precise control over the emission and…

Computational Physics · Physics 2026-05-19 Zhenjiang Zhao , Zhihua Zheng , Zhiyi Xu , Xing Ran , Xiaolong Yao , Fangping Ouyang

Achieving quantum state transfer in passive ways can become a powerful asset for scalable quantum networks. Here, we demonstrate how giant atoms coupled to 1D waveguides provide a platform for such a passive, deterministic transfer.…

We study the generation of spin-squeezing in arrays of long-lived dipoles subject to collective emission, coherent drive, elastic interactions, and spontaneous emission. Counter-intuitively, it is found that the introduction of spontaneous…

Quantum Physics · Physics 2020-11-11 K. Tucker , D. Barberena , R. J. Lewis-Swan , J. K. Thompson , J. G. Restrepo , A. M. Rey

A approach for two-dimensional(2D) negative permeability in a $\Lambda$-type three-level atomic system interacting with a probe magnetic and the superposition of two orthogonal standing-wave fields is proposed. Through the theoretical…

Quantum Physics · Physics 2024-03-22 Shuang-Ying Zhang , Shun-Cai Zhao , Ai-Ling Gong

We present a protocol based on the interplay between superradiance and superabsorption to achieve the coherent deflection of an atomic sample due to the momentum transfer from the atoms to a cavity field. The coherent character of this…

Quantum Physics · Physics 2025-09-19 L. F. Alves da Silva , L. M. R. Rocha , M. H. Y. Moussa

We study the spatial decoherence dynamics for the relative position of two atoms in a singlemode ring cavity. We find that the spatial decoherence of the two atoms depends strongly on their relative position. Taking into account the spatial…

Quantum Physics · Physics 2015-05-20 Li Zheng , Chui-Ping Yang , Franco Nori

We study spontaneous emission in an atomic ladder system, with both transitions coupled near-resonantly to the edge of a photonic band gap continuum. The problem is solved through a recently developed technique and leads to the formation of…

Quantum Physics · Physics 2007-05-23 Georgios M. Nikolopoulos , P. Lambropoulos

We applied to an open flow a proper orthogonal decomposition (pod) technique, on 2D snapshots of the instantaneous velocity field, to reveal the spatial coherent structures responsible of the self-sustained oscillations observed in the…

Classical Physics · Physics 2007-05-23 L. R. Pastur , F. Lusseyran , Y. Fraigneau , B. Podvin

The interpretation of high-harmonic generation (HHG) in solids typically relies on phenomenological dephasing times far shorter than what is expected from microscopic scattering processes. Here we show that zero-point fluctuations…

We propose a scheme for subwavelength localization of an atom conditioned upon the absorption of a weak probe field at a particular frequency. Manipulating atom-field interaction on a certain transition by applying drive fields on nearby…

Quantum Physics · Physics 2009-11-11 Mostafa Sahrai , Habib Tajalli , Kishore T. Kapale , M. Suhail Zubairy

We analyze the time evolution of an initial spatial coherence for a two level atom whose internal degrees of freedom interact with a single mode of a cavity field. When the qubit-field subsystem is taken as an environment, the translational…

Quantum Physics · Physics 2009-07-13 A. Vaglica , G. Vetri

The generation of high-order harmonics in diatomic molecules is investigated within the framework of the strong-field approximation. We show that the conventional saddle-point approximation is not suitable for large internuclear distances.…

Atomic Physics · Physics 2009-11-11 Ciprian C. Chirila , Manfred Lein

A complete representation of 3D objects requires characterizing the space of deformations in an interpretable manner, from articulations of a single instance to changes in shape across categories. In this work, we improve on a prior…

Computer Vision and Pattern Recognition · Computer Science 2023-03-21 Tristan Aumentado-Armstrong , Stavros Tsogkas , Sven Dickinson , Allan Jepson

We demonstrate experimental generation of spatially-entangled photon-pairs by spontaneous parametric down conversion (SPDC) using a partial spatially coherent pump beam. By varying the spatial coherence of the pump, we show its influence on…

Quantum Physics · Physics 2019-05-29 Hugo Defienne , Sylvain Gigan

We incorporate deep learning (DL) into coherent beam combining (CBC) systems for the first time, to the best of our knowledge. Using a well-trained convolutional neural network DL model, the phase error in CBC systems could be accurately…

We study the optimal focusing of two-level atoms with a near resonant standing wave light, using both classical and quantum treatments of the problem. Operation of the focusing setup is considered as a nonlinear spatial squeezing of atoms…

Quantum Physics · Physics 2015-07-15 R. Arun , Offir Cohen , I. Sh. Averbukh

We demonstrate control over the localization of high-lying Rydberg wave packets in argon atoms with phase-locked orthogonally polarized two-color (OTC) laser fields. With a reaction microscope, we measured ionization signals of high-lying…