1) La descarga del recurso depende de la página de origen
2) Para poder descargar el recurso, es necesario ser usuario registrado en Universia

Opción 1: Descargar recurso

Detalles del recurso


The origin of the coherences in two-dimensional spectroscopy of photosynthetic complexes remains disputed. Recently, it has been shown that in the ultrashort-pulse limit, oscillations in a frequency-integrated pump-probe signal correspond exclusively to electronic coherences, and thus such experiments can be used to form a test for electronic vs. vibrational oscillations in such systems. Here, we demonstrate a method for practically implementing such a test, whereby pump-probe signals are taken at several different pulse durations and used to extrapolate to the ultrashort-pulse limit. We present analytic and numerical results determining requirements for pulse durations and the optimal choice of pulse central frequency, which can be determined from an absorption spectrum. Our results suggest that for numerous systems, the required experiment could be implemented by many ultrafast spectroscopy laboratories using pulses of tens of femtoseconds in duration. Such experiments could resolve the standing debate over the nature of coherences in photosynthetic complexes.

Pertenece a

Digital Access to Scholarship at Harvard  


Johnson, Allan S. -  Yuen -  Zhou, Joel -  Aspuru -  Guzik, Alan -  Krich, Jacob - 

Id.: 69632453

Idioma: inglés (Estados Unidos)  - 

Versión: 1.0

Estado: Final

Tipo de recurso: Journal Article  - 

Tipo de Interactividad: Expositivo

Nivel de Interactividad: muy bajo

Audiencia: Estudiante  -  Profesor  -  Autor  - 

Estructura: Atomic

Coste: no

Copyright: sí

: open

Requerimientos técnicos:  Browser: Any - 

Relación: [References] doi:10.1063/1.4903982
[References] https://arxiv.org/abs/1408.3121
[References] The Journal of Chemical Physics

Fecha de contribución: 11-feb-2017


* Quick submit: 2017-02-03T17:20:53-0500
* Johnson, Allan S., Joel Yuen-Zhou, Alán Aspuru-Guzik, and Jacob J. Krich. 2014. “Practical Witness for Electronic Coherences.” The Journal of Chemical Physics 141 (24) (December 28): 244109. doi:10.1063/1.4903982.
* 0021-9606

Otros recursos del mismo autor(es)

  1. Measurement of the charged-particle multiplicity inside jets from √s = 8 TeV pp collisions with the ATLAS detector The number of charged particles inside jets is a widely used discriminant for identifying the quark ...
  2. Search for anomalous electroweak production of WW/WZ in association with a high-mass dijet system in pp collisions at √s=8 TeV with the ATLAS detector A search is presented for anomalous quartic gauge boson couplings in vector-boson scattering. The da...
  3. Search for metastable heavy charged particles with large ionization energy loss in pp collisions at √s=13 TeV using the ATLAS experiment This paper presents a search for massive charged long-lived particles produced in pp collisions at [...
  4. Measurements of Zγ and Zγγ production in pp collisions at √s = 8 TeV with the ATLAS detector The production of Z bosons with one or two isolated high-energy photons is studied using pp collisio...
  5. Can natural ways to stimulate the vagus nerve improve seizure control? The vagus nerve (VN) is the longest cranial nerve, innervating the neck, thorax and abdomen, with af...

Otros recursos de la mismacolección

  1. Celebrities’ impact on health-related knowledge, attitudes, behaviors, and status outcomes: protocol for a systematic review, meta-analysis, and meta-regression analysis Background: Celebrities are highly influential people whose actions and decisions are watched and of...
  2. Mercury exposure and risk of cardiovascular disease: a nested case-control study in the PREDIMED (PREvention with MEDiterranean Diet) study Background: Substantial evidence suggests that consuming 1–2 servings of fish per week, particularly...
  3. Genetic relatedness analysis reveals the cotransmission of genetically related Plasmodium falciparum parasites in Thiès, Senegal Background: As public health interventions drive parasite populations to elimination, genetic epidem...
  4. Evidence of non-Plasmodium falciparum malaria infection in Kédougou, Sénégal Background: Expanded malaria control efforts in Sénégal have resulted in increased use of rapid diag...
  5. Environmental variation and the evolution of large brains in birds Environmental variability has long been postulated as a major selective force in the evolution of la...

Aviso de cookies: Usamos cookies propias y de terceros para mejorar nuestros servicios, para análisis estadístico y para mostrarle publicidad. Si continua navegando consideramos que acepta su uso en los términos establecidos en la Política de cookies.