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In the last decade, chirality-induced spin selectivity (CISS) has been attracting extensive interest. However, there still exists a large gap between experiments and quantitative theoretical results, and the microscopic mechanism of CISS,…

Mesoscale and Nanoscale Physics · Physics 2023-10-18 Chenchen Wang , Zeng-Ren Liang , Xiao-Feng Chen , Ai-Min Guo , Guanghao Ji , Qing-Feng Sun , Yong Yan

Synthetic chiral light enables ultrafast and highly efficient imaging of molecular chirality. Unlike standard circularly polarized light, the handedness of synthetic chiral light does not rely on the spatial structure of the light field: it…

Optics · Physics 2022-06-06 Laura Rego , David Ayuso

Slater determinants have underpinned quantum chemistry for nearly a century, yet their full potential has remained challenging to exploit. In this work, we show that a variational wavefunction composed of a few hundred optimized…

Chemical Physics · Physics 2026-04-17 Clemens Giuliani , Jannes Nys , Rocco Martinazzo , Giuseppe Carleo , Riccardo Rossi

We introduce and theoretically analyze the concept of manipulating optical chirality via strong coupling of the optical modes of chiral nanostructures with excitonic transitions in molecular layers or semiconductors. With chirality being…

The fundamental issues of symmetry related to chirality are discussed and applied to simple situations relevant to liquid crystals. We show that any chiral measure of a geometric object is a pseudoscalar (invariant under proper rotations…

Statistical Mechanics · Physics 2009-10-31 A. B. Harris , Randall D. Kamien , T. C. Lubensky

We explore a pure optical method for enantioselective orientation of chiral molecules by means of laser fields with twisted polarization. Several field implementations are considered, including a pair of delayed cross-polarized laser…

Chemical Physics · Physics 2018-03-23 I. Tutunnikov , E. Gershnabel , S. Gold , I. Sh. Averbukh

We propose an effective and flexible scheme for reverse engineering of a Hamiltonian by designing the evolution operators to eliminate the terms of Hamiltonian which are hard to be realized in practice. Different from transitionless quantum…

Quantum Physics · Physics 2016-08-15 Yi-Hao Kang , Ye-Hong Chen , Qi-Cheng Wu , Bi-Hua Huang , Yan Xia , Jie Song

This paper presents a novel personal identification and verification system using information extracted from the hand shape and texture. The system has two major constituent modules: a fully automatic and robust peg free segmentation and…

Computer Vision and Pattern Recognition · Computer Science 2019-12-24 F. Sohel , A. El-Sallam , M. Bennamoun

Strong light-matter coupling in chiral cavities has been proposed as an effective way to selectively interact with an enantiomer that shares the same handedness as the cavity's chiral mode. We show that surface plasmons supported by a…

Human biology has a preference for left-handed chiral molecules and an outstanding question is if this is imposed through astrophysical origins. We aim to evaluate the known information about chiral molecules within astrophysical and…

Instrumentation and Methods for Astrophysics · Physics 2024-01-19 Chenoa D. Tremblay , Roger D. Amos , Rika Kobayashi

Existing hand detection methods usually follow the pipeline of multiple stages with high computation cost, i.e., feature extraction, region proposal, bounding box regression, and additional layers for rotated region detection. In this…

Computer Vision and Pattern Recognition · Computer Science 2020-01-20 Dan Liu , Dawei Du , Libo Zhang , Tiejian Luo , Yanjun Wu , Feiyue Huang , Siwei Lyu

Robotic in-hand manipulation has been a long-standing challenge due to the complexity of modelling hand and object in contact and of coordinating finger motion for complex manipulation sequences. To address these challenges, the majority of…

Robotics · Computer Science 2019-10-25 Tingguang Li , Krishnan Srinivasan , Max Qing-Hu Meng , Wenzhen Yuan , Jeannette Bohg

We present two methods for efficient detection of chiral molecules based on sequences of single pulses and Raman pulse pairs. The chiral molecules are modelled by a closed-loop three-state system with different signs in one of the couplings…

Quantum Physics · Physics 2020-11-18 Boyan T. Torosov , Michael Drewsen , Nikolay V. Vitanov

Trains of ultrashort laser pulses separated by the time of rotational revival (typically, tens of picoseconds) have been exploited for creating ensembles of aligned molecules. In this work we introduce a chiral pulse train - a sequence of…

Quantum Physics · Physics 2013-05-29 S. Zhdanovich , A. A. Milner , C. Bloomquist , J. Floß , I. Sh. Averbukh , J. W. Hepburn , V. Milner

It has been long recognized that the spatial polarization of the electronic clouds in molecules, and the spatial arrangements of atoms into chiral molecular structures, play crucial roles in physics, chemistry and biology. However, these…

Optics · Physics 2020-04-14 David Ayuso , Andres Ordonez , Piero Decleva , Misha Ivanov , Olga Smirnova

Determining kinetic rate constants is a highly relevant problem in biochemistry, so various methods have been designed to extract them from experimental data. Such methods have two main components: the experimental apparatus and the…

Quantitative Methods · Quantitative Biology 2017-08-04 József Vass , Sergey N. Krylov

Colloidal self-assembly -- the spontaneous organization of colloids into ordered structures -- has been considered key to produce next-generation materials. However, the present-day staggering variety of colloidal building blocks and the…

Soft Condensed Matter · Physics 2021-06-29 Gabriele Maria Coli , Emanuele Boattini , Laura Filion , Marjolein Dijkstra

Reconstructing high-fidelity hand models with intricate textures plays a crucial role in enhancing human-object interaction and advancing real-world applications. Despite the state-of-the-art methods excelling in texture generation and…

Computer Vision and Pattern Recognition · Computer Science 2024-07-10 Qijun Gan , Wentong Li , Jinwei Ren , Jianke Zhu

The recently introduced synthetic chiral light [D. Ayuso et al, Nat. Photon. 13, 866-871 (2019)] has opened up new opportunities for ultrafast and highly efficient imaging and control of chiral matter. Here we show that the giant…

Chemical Physics · Physics 2022-05-18 David Ayuso

Enantiomers are chiral molecules that exist in right-handed and left-handed conformations. Optical techniques of enantiomers detection are widely employed to discriminate between left- and right-handed molecules. However, identical spectra…

Quantum Physics · Physics 2023-05-10 Mohsen Izadyari , M. Tahir Naseem , Özgür E. Müstecaplıouglu