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The process of photosynthesis, the main source of energy in the animate world, converts sunlight into chemical energy. The surprisingly high efficiency of this process is believed to be enabled by an intricate interplay between the quantum…

Multi-photon absorption is a well-known phenomenon. With atom lasers a similar process could take place for massive particles, the ionization of an atom or molecule by the successive interaction with various particles. This process would…

Quantum Physics · Physics 2009-11-13 Pedro Sancho

Panchromatic absorbing materials are widely regarded as a key strategy for enhancing solar energy utilization and photocurrent generation. However, in artificial molecular systems, broadening the absorption spectrum is often accompanied by…

Chemical Physics · Physics 2026-01-01 Hsien-Hsin Chou

We discuss recent progress towards the establishment of important structure-property-function relationships in eumelanins - key functional bio-macromolecular systems responsible for photo-protection and immune response in humans, and…

Biomolecules · Quantitative Biology 2007-05-23 Paul Meredith , B. J. Powell , Jennifer Riesz , Stephen Nighswander-Rempel , Mark R. Pederson , Evan Moore

Photosynthesis is the basic process used by plants to convert light energy in reaction centers into chemical energy. The high efficiency of this process is not yet understood today. Using the formalism for the description of open quantum…

Biological Physics · Physics 2017-06-12 Hichem Eleuch , Ingrid Rotter

This is a tutorial-style introduction to the field of molecular polaritons. We describe the basic physical principles and consequences of strong light-matter coupling common to molecular ensembles embedded in UV-visible or infrared…

Chemical Physics · Physics 2020-03-18 Felipe Herrera , Jeffrey Owrutsky

The absorption of thin hydrogenated amorphous silicon layers can be efficiently enhanced through a controlled periodic patterning. Light is trapped through coupling with photonic Bloch modes of the periodic structures, which act as an…

A uniform minimal model of rhodopsin photoisomerization induced by either coherent laser light or low level incoherent light (e.g. moonlight) is provided. Realistic timescales for both processes, which differ by ten orders of magnitude, are…

Quantum Physics · Physics 2009-11-23 Kunihito Hoki , Paul Brumer

Light-activated drugs are a promising way to localize biological activity and minimize side effects. However, their development is complicated by the numerous photophysical and biological properties that must be simultaneously optimized. To…

Chemical Physics · Physics 2023-02-23 Simon Axelrod , Eugene Shakhnovich , Rafael Gómez-Bombarelli

Quantum interference between multiple pathways in molecular photodissociation often results in angular momentum polarization of atomic products and this can give deep insight into fundamental physical processes. For dissociation of diatomic…

Chemical Physics · Physics 2022-04-26 Chaya Weeraratna , Arthur G. Suits , Oleg S. Vasyutinskii

Energetic processing of interstellar ice mantles and planetary atmospheres via photochemistry is a critical mechanism in the extraterrestrial synthesis of prebiotic molecules. Photochemistry is defined as chemical processes initiated by…

Astrophysics of Galaxies · Physics 2021-02-02 Christopher R. Arumainayagam , Eric Herbst , A. N. Heays , Ella Mullikin , Megan Farrah , Michael G. Mavros

Coupling photons to Rydberg excitations in a cold atomic gas yields unprecedentedly large optical nonlinearities at the level of individual light quanta, where the formation of nearby dark-state polaritons is blocked by the strong…

Quantum Physics · Physics 2017-07-19 Callum R. Murray , Thomas Pohl

When atoms come together and bond, we call these new states molecules, and their properties determine many aspects of our daily life. Strangely enough, it is conceivable for light and molecules to bond, creating new hybrid light-matter…

Materials Science · Physics 2018-02-19 Branko Kolaric , Bjorn Maes , Koen Clays , Thomas Durt , Yves Caudano

The emergence of oxygenic photosynthesis created a new niche with dramatic potential to transform energy flow through Earth's biosphere. However, more primitive forms of photosynthesis that fix CO2 into biomass using electrons from reduced…

Earth and Planetary Astrophysics · Physics 2019-07-31 Kazumi Ozaki , Katharine J. Thompson , Rachel L. Simister , Sean A. Crowe , Christopher T. Reinhard

We report on the fabrication of two-dimensional periodic photonic nanostructures by nanoimprint lithography and dry etching, and their integration into a 1-{\mu}m-thin mono-crystalline silicon solar cell. Thanks to the periodic…

Mesoscale and Nanoscale Physics · Physics 2012-12-17 Christos Trompoukis , Ounsi El Daif , Valérie Depauw , Ivan Gordon , Jef Poortmans

The study of how photosynthetic organisms convert light offers insight not only into nature's evolutionary process, but may also give clues as to how best to design and manipulate artificial photosynthetic systems -- and also how far we can…

Soft Condensed Matter · Physics 2011-07-07 Felipe Caycedo-Soler , Ferney J. Rodriguez , Luis Quiroga , Guannan Zhao , Neil F. Johnson

The absorption of a single photon that excites a quantum system from a low to a high energy level is an elementary process of light-matter interaction, and a route towards realizing pure single-photon absorption has both fundamental and…

Quantum Physics · Physics 2017-05-08 Chuan-Cun Shu , Daoyi Dong , Ian R. Petersen , Niels E. Henriksen

The polarisation of light is a powerful and widely used degree of freedom to encode information, both in classical and quantum applications. In particular, quantum information technologies based on photons are being revolutionised by the…

Plasmonic materials have got wide attention as a potential candidate for light driven catalysis of chemical conversions by harnessing solar energy to reduce the environmental issues generated by fossil fuels-based bulk chemical industries.…

Optics · Physics 2024-08-27 Mahadi Hasan , Mahamadu Tiah Mahama

The interaction of light with photosynthetic proteins is an extremely efficient process and has been thoroughly investigated. However, exploring light-matter interactions in hybrid nano-solid-photosynthetic proteins is a relatively new and…

Biological Physics · Physics 2024-11-20 Itai Carmeli , Chanoch Carmeli