Technical Comments

Response to Comment on “Coherent Control of Retinal Isomerization in Bacteriorhodopsin”

Science  27 Jul 2007:
Vol. 317, Issue 5837, pp. 453c
DOI: 10.1126/science.1137032

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Abstract

Joffre attempts to show that the linear response of any quantum system to an external perturbation is phase insensitive, but he uses incorrect mathematical assumptions, misinterprets the time invariance principle, and ignores causality. We argue that the opposite case—an explicit phase dependence for a signal measured in the linear excitation regime—can equally be shown using Joffre's approach and assumptions.

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