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Laser Interference Lithography (LIL) is a versatile fabrication method for patterning sub-micron structures in arrays covering large areas. It is a facile and fast mask-less lithography process to produce large area periodic patterns. The…

Optics · Physics 2014-08-28 A. Alfred Kiruba Raj , D. Jackuline Moni , D. Devaprakasam

State-insensitive dipole trapping of multilevel atoms can be achieved by an appropriate choice of the wavelength of the trapping laser, so that the interaction with the different transitions results in equal AC Stark shifts for the ground…

Atomic Physics · Physics 2015-10-28 M. M. Metbulut , F. Renzoni

We develop photoelectron interferometry based on laser-assisted extreme ultraviolet ionization for flexible and robust control of photoelectron circular dichroism in randomly oriented chiral molecules. A comb of XUV photons ionizes a sample…

We investigate the formation of photonic bound states in the continuum (BICs) in photonic crystal slabs from an analytical perspective. Unlike the stationary at-$\Gamma$ BICs which origin from the geometric symmetry, the tunable…

Optics · Physics 2014-07-22 Yi Yang , Chao Peng , Yong Liang , Zhengbin Li , Susumu Noda

Light-induced conical intersections (LICIs) can be formed both by standing or by running laser waves. The position of a LICI is determined by the laser frequency while the laser intensity controls the strength of the nonadiabatic coupling.…

Atomic and Molecular Clusters · Physics 2016-07-11 András Csehi , Gábor J. Halász , Lorenz S. Cederbaum , Ágnes Vibók

We study the effect of structural disorder on the transition from the bound states in the continuum (BICs) to quasi-BICs by the example of the periodic photonic structure composed of two layers of parallel dielectric rods. We uncover the…

Optical bound state in the continuum (BIC) is characterized by infinitely high quality factor resulting in drastic enhancement of light-matter interaction phenomena. We study the optical response of a one-dimensional photonic crystal slab…

Optics · Physics 2018-07-04 S. D. Krasikov , A. A. Bogdanov , I. V. Iorsh

The spontaneous emergence of chirality in crystalline solids has profound implications for electronic, optical, and topological properties, making the control of chiral phases a central challenge in materials design. Here, we investigate…

Materials Science · Physics 2026-05-15 Martin Gutierrez-Amigo , Claudia Felser , Ion Errea , Maia G. Vergniory

In recent years, bound states in continuum (BICs) have gained significant value for practitioners in both theoretical and applied photonics. This paper focuses on devices that utilize non-homogeneous thin patterned laminae. The properties,…

Optics · Physics 2024-07-11 Ovidiu-Zeno Lipan , Aldo De Sabata

We show that point defects in two-dimensional photonic crystals can support bound states in the continuum (BICs). The mechanism of confinement is a symmetry mismatch between the defect mode and the Bloch modes of the photonic crystal. These…

We propose a scheme for preparation of entangled coherent states for the motion of an ion in a two-dimensional anisotropic trap. In the scheme, the ion is driven by four laser beams along different directions in the ion trap plane,…

Quantum Physics · Physics 2019-05-14 Zhi-Rong Zhong , Xin-Jie Huang , Zhen-Biao Yang , Li-Tuo Shen , Shi-Biao Zheng

A novel method of ground state laser cooling of trapped atoms utilizes the absorption profile of a three (or multi-) level system which is tailored by a quantum interference. With cooling rates comparable to conventional sideband cooling,…

Quantum Physics · Physics 2010-03-26 F. Schmidt-Kaler , J. Eschner , G. Morigi , C. F. Roos , D. Leibfried , A. Mundt , R. Blatt

We propose a bilayer all-dielectric PhC for controlling Janus bound states in the continuum (BIC) and optical chirality through symmetry-selective perturbations. Starting from a symmetry-protected $\Gamma$-point BIC, we use interlayer…

Optics · Physics 2026-05-15 Zhexing Dong , Shengxuan Xia , Yee Sin Ang , Haiyu Meng

The near resonant cooling mechanism have offered for the experiment with laser induced excitation of Lithium isotopes and its ionization by collisions.

Atomic Physics · Physics 2007-05-23 Evgueni V. Kovarski

A novel robust mechanism for the generation of "trapping states" is shown to exist in the coupling of a two-level system with an oscillator, which is based on nonlinearities in the laser-induced vibronic coupling. This mechanism is…

Quantum Physics · Physics 2007-05-23 S. Wallentowitz , W. Vogel , P. E. Toschek

Chiral bound states in the continuum (BICs) are confined photonic modes with infinite quality factors and chiral response, offering significant potential for chiral optics. Although a novel type of spin-orbital-locking chiral BIC was…

Optics · Physics 2026-03-03 Maohua Gong , Qiutong Zhen , Yujie Tang , Peng Hu , Qing-An Tu , Yan Meng , Peiheng Zhou , Zhen Gao

A brief outline of the Lorentz Integral Transform (LIT) method is given. The method is well established and allows to treat reactions into the many-body continuum with bound-state like techniques. The energy resolution that can be achieved…

Nuclear Theory · Physics 2015-06-11 Winfried Leidemann

We introduce a new type of a bound state in the continuum (BIC) which appears in the photonic structure consisting of two coupled waveguides where one of them supports a discrete eigenmode spectrum embedded in the continuum of the other…

Optics · Physics 2024-12-13 Jiri Petracek , Vladimir Kuzmiak , Jiri Ctyroky , Ivan Richter

Recent progress in constructing supramolecular assemblies with hierarchical chirality offers new opportunities to investigate the chirality-induced spin selectivity (CISS) effect and its potential applications. In this work, we…

Mesoscale and Nanoscale Physics · Physics 2025-12-22 Song Chen , Kai-Yuan Zhang , Xi Sun , Shu-Zheng Zhou , Hua-Hua Fu

Bound states in the continuum (BiCs) convert dissipative open systems into effectively closed quantum subspaces through destructive interference. We show that two identical giant atoms coupled to a one-dimensional waveguide support BICs…

Quantum Physics · Physics 2026-02-27 Alexis R. Legón , Mario Miranda Rojas , Pedro Orellana , Ariel Norambuena