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The spontaneous emission spectrum of a multi-level atom or molecule with nonreciprocal transition is investigated. It is shown that the nonreciprocal transition can lead to the elimination of a spectral line in the spontaneous emission…

Quantum Physics · Physics 2020-10-07 Xun-Wei Xu , Chong Ye , Yong Li , Ai-Xi Chen

Chirality plays a crucial role in a broad range of processes including light-matter interactions in physics, chemistry and biology, which opens up new applications in nanophotonics, quantum technologies and photochemistry. Quantum…

Optics · Physics 2026-04-10 Yuanyang Xie , Alexey V. Krasavin , Anatoly V. Zayats

We present an optical "enantio-selective switch", that, in two steps, turns a ("racemic") mixture of left-handed and right-handed chiral molecules into the enantiomerically pure state of interest. The optical switch is composed of an…

Quantum Physics · Physics 2009-11-07 Petr Král , Ioannis Thanopulos , Moshe Shapiro , Doron Cohen

Molecular chirality plays fundamental roles in biology. The chiral response of a molecule occurs at a specific spectral position, determined by its molecular structure. This fingerprint can be transferred to other spectral regions via the…

Enantio-conversion of chiral mixtures, converting the mixtures composed of left- and right-handed chiral molecules into the homochiral ensembles, has become an important research topic in chemical and biological fields. In previous studies…

Quantum Physics · Physics 2023-12-18 Fen Zou , Chong Ye , Yong Li

As an attempt to understand the homochirality of organic molecules in life, a chemical reaction model is proposed where the production of chiral monomers from achiral substrate is catalyzed by the polymers of the same enatiomeric type. This…

Biological Physics · Physics 2007-07-20 Yukio Saito , Hiroyuki Hyuga

We analyze how chirality can generate pulling optical forces and left-handed torques by cross-coupling linear-to-angular momenta between the light field and the chiral object. In the dipolar regime, we reveal that such effects can emerge…

Optics · Physics 2015-03-10 Antoine Canaguier-Durand , Cyriaque Genet

We study corrections to the Heisenberg interaction between several lateral, single-electron quantum dots. We show, using exact diagonalization, that three-body chiral terms couple triangular configurations to external sources of flux rather…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 V. W. Scarola , K. Park , S. Das Sarma

We calculate optical forces and torques exerted on a chiral dipole by chiral light fields and reveal genuinely chiral forces in combining the chiral contents of both light field and dipolar matter. Here, the optical chirality is…

Optical chirality is central to many industrial photonic technologies including enantiomer identification, ellipsometry-based tomography and spin multiplexing in optical communication. However, a substantial chiral response requires a…

Optics · Physics 2018-07-11 Longqing Cong , Prakash Pitchappa , Nan Wang , Ranjan Singh

Control of molecular orientation is emerging as crucial for the characterization of the stereodynamics of kinetics processes beyond structural stereochemistry. The special role played in chiral discrimination phenomena has been particularly…

The integration of chirality into functional materials enables control of light-matter interactions beyond binary illumination (on/off). Conventional photoactuators rely on binary modulation, limiting them to unidirectional motion. In…

Materials Science · Physics 2025-12-11 Wookjin Jung , Dongkyu Lee , Yonghee Lee , Ki Hyun Park , Jihyeon Yeom

We put forward a novel, twofold scheme that enables at the same time all-optical enantioselection and sorting of single multipolar chiral microspheres based on optical pulling forces exerted by two non-collinear, nonstructured,…

Optics · Physics 2021-03-04 R. Ali , R. S. Dutra , F. A. Pinheiro , P. A. Maia Neto

Chirality ubiquitously appears in nature, however, its quantification remains obscure owing to the lack of microscopic description at the quantum-mechanical level. We propose a way of evaluating chirality in terms of electric toroidal…

Materials Science · Physics 2024-05-22 Akane Inda , Rikuto Oiwa , Satoru Hayami , Hiroshi M Yamamoto , Hiroaki Kusunose

Chiroptical enantioselective sensing is gaining traction across various applications. However, intrinsic molecular chiroptical responses are weak, and existing amplification approaches add synthesis, manufacturing, or operational complexity…

Mirror symmetry is among the most fundamental concepts of physics and its spontaneous breaking at the molecular level allows chiral molecules to exist in two enantiomers that are mirror images of each other. The majority of chiro-optical…

Optics · Physics 2021-09-29 Alessandro Ciattoni

A first deception of QM on antiH already appears in one-center integrals for two-center systems (G. Van Hooydonk, physics/0511115). In reality, full QM is a theory for chiral systems but the QM establishment was wrong footed with a…

General Physics · Physics 2007-05-23 G. Van Hooydonk

A theory concerning non-zero macroscopic chirality-dependent force between a source mass and homochiral molecules due to the exchange of light particles is presented in this paper. This force is proposed to have opposite sign for molecules…

General Relativity and Quantum Cosmology · Physics 2009-11-13 Yonghong Hu , Zhongzhu Liu , Qing Xu , Jun Luo

Photoelectron circular dichroism results from one-photon ionization of chiral molecules by circularly polarized light and manifests itself in forward-backward asymmetry of electron emission in the direction orthogonal to the light…

Atomic Physics · Physics 2019-04-24 Andres F. Ordonez , Olga Smirnova

We propose a gain-assisted enantioselective scheme in dye-doped chiral particles, demonstrating optical pulling and pushing forces that can be tuned using externally controllable parameters. By controlling the concentration of dye molecules…