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Nonlinear optical phenomena such as parametric amplification and frequency conversion are typically driven by external optical fields. Free electrons can also act as electromagnetic sources, offering unmatched spatial precision. Combining…

介观与纳米尺度物理 · 物理学 2025-08-04 Leila Prelat , Eduardo J. C. Dias , F. Javier García de Abajo

We generate experimentally a honeycomb refractive index pattern in an atomic vapor cell using electromagnetically-induced transparency. We study experimentally and theoretically the propagation of polarized light beams in such "photonic…

介观与纳米尺度物理 · 物理学 2020-02-13 Zhaoyang Zhang , Shun Liang , Feng Li , Shaohuan Ning , Yiming Li , G. Malpuech , Yanpeng Zhang , Min Xiao , D. Solnyshkov

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…

光学 · 物理学 2021-09-29 Alessandro Ciattoni

We demonstrate coherent control over the photoelectron circular dichroism in randomly oriented chiral molecules, based on quantum interference between multiple photoionization pathways. To significantly enhance the chiral signature, we use…

量子物理 · 物理学 2019-01-16 R. Esteban Goetz , Christiane P. Koch , Loren Greenman

Chiral circularly polarized (CP) light is central to many photonic technologies, from optical communication of spin information to novel display and imaging technologies. As such, there has been significant effort in the development of…

材料科学 · 物理学 2023-07-25 Li Wan , Yizhou Liu , Matthew J. Fuchter , Binghai Yan

Chirality is a ubiquitous phenomenon in the natural world. Many biomolecules without inversion symmetry such as amino acids and sugars are chiral molecules. Measuring and controlling molecular chirality at a high precision down to the…

We investigate photon tunneling in a pair of coupled inverted circular split-ring microwave resonators with four discrete chiral orientations. By varying the spacing between the resonators, we observe strong modulation of the transmission…

Chiral molecules with broken parity symmetries can be modeled as quantum systems with cyclic-transition structures. By using these novel properties, we design two-step laser pulses to distinguish left- and right-handed molecules from the…

量子物理 · 物理学 2015-05-19 W. Z. Jia , L. F. Wei

Chirality, or handedness, is a geometrical property denoting a lack of mirror symmetry. Chirality is ubiquitous in nature and is associated with the non-reciprocal interactions observed in complex systems ranging from biomolecules to…

量子物理 · 物理学 2024-08-08 Jonah S. Peter , Stefan Ostermann , Susanne F. Yelin

Electromagnetism and light-matter interaction in rotating systems is a rich area of ongoing research. We study the interaction of light with a gas of non-interacting two-level atoms confined to a rotating disk. We numerically solve the…

光学 · 物理学 2019-06-11 Calum Maitland , Matteo Clerici , Fabio Biancalana

Single-layer transition-metal dichalcogenides provide an unique intrinsic entanglement between the spin/valley/orbital degrees of freedom and the polarization of scattered photons. This scenario gives rise to the well-assessed optical…

材料科学 · 物理学 2025-01-13 Habib Rostami , Federico Cilento , Emmanuele Cappelluti

Electromagnetic fields coupled with mechanical degrees of freedom have recently shown exceptional and innovative applications, ultimately leading to mesoscopic optomechanical devices operating in the quantum regime of motion.…

Recent experiments have found that polyisocyanates composed of a mixture of opposite enantiomers follow a chiral ``majority rule:'' the chiral order of the copolymer, measured by optical activity, is dominated by whichever enantiomer is in…

凝聚态物理 · 物理学 2009-10-28 J. V. Selinger , R. L. B. Selinger

We present a comprehensive study of enantioselective orientation of chiral molecules excited by a pair of delayed cross-polarized femtosecond laser pulses. We show that by optimizing the pulses' parameters, a significant (~ 10%) degree of…

光学 · 物理学 2022-07-20 Long Xu , Ilia Tutunnikov , Yehiam Prior , Ilya Sh. Averbukh

We propose an approach to sensitively probe the chirality of molecules by measuring their coherent optical absorption spectra. It is shown that quantum dynamics of the cyclic three-level chiral molecules driven by appropriately-designed…

量子物理 · 物理学 2015-05-28 W. Z. Jia , L. F. Wei

Here we propose a mechanism by which spin polarization can be generated dynamically in chiral molecular systems undergoing photo-induced electron transfer. The proposed mechanism explains how spin polarization emerges in systems where…

介观与纳米尺度物理 · 物理学 2021-08-19 Thomas P. Fay , David T. Limmer

Biomolecules that constitute life on Earth are chiral, but the precise mechanism by which homochirality emerged remains a mystery. In this work it is demonstrated that reactions of radical pairs, where one of the radical electron spins is…

化学物理 · 物理学 2025-08-08 Thomas P Fay

Optical chirality plays an essential role in chiral light-matter interactions with broad applications in sensing and spectroscopy. Conventional methods of generating optical chirality usually employ chiral structures or chiral excitations.…

光学 · 物理学 2023-06-21 Shiqi Jia , Tong Fu , Jie Peng , Shubo Wang

The selection rules for dipole and Raman activity can be relaxed due to local distortion of a crystalline structure. In this situation a dipole-inactive mode can become simultaneously active in Raman scattering and in dipole interaction…

无序系统与神经网络 · 物理学 2009-09-25 Lev I. Deych , M. Erementchouk , V. A. Ignatchenko

One of the most widely used chiroptical spectroscopic methods for studying chiral molecules is Raman optical activity; however, the chiral Raman optical activity signal is extremely weak. Here, we theoretically examine enhanced chiral…

量子物理 · 物理学 2019-05-03 Tuguldur Kh. Begzjav , Zhedong Zhang , Marlan O. Scully , Girish S. Agarwal