Coherent (photon) vs incoherent (current) detection of multidimensional optical signals from single molecules in open junctions

Agarwalla, Bijay Kumar and Harbola, Upendra and Hua, Weijie and Zhang, Yu and Mukamel, Shaul (2015) Coherent (photon) vs incoherent (current) detection of multidimensional optical signals from single molecules in open junctions. In: JOURNAL OF CHEMICAL PHYSICS, 142 (21).

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Abstract

The nonlinear optical response of a current-carrying single molecule coupled to two metal leads and driven by a sequence of impulsive optical pulses with controllable phases and time delays is calculated. Coherent (stimulated, heterodyne) detection of photons and incoherent detection of the optically induced current are compared. Using a diagrammatic Liouville space superoperator formalism, the signals are recast in terms of molecular correlation functions which are then expanded in the many-body molecular states. Two dimensional signals in benzene-1,4-dithiol molecule show cross peaks involving charged states. The correlation between optical and charge current signal is also observed. (C) 2015 AIP Publishing LLC.

Item Type:	Journal Article
Publication:	JOURNAL OF CHEMICAL PHYSICS
Publisher:	AMER INST PHYSICS
Additional Information:	Copy right for this article belongs to the AMER INST PHYSICS, 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	19 Jul 2015 06:09
Last Modified:	19 Jul 2015 06:09
URI:	http://eprints.iisc.ac.in/id/eprint/51812

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