Physics – Condensed Matter – Materials Science
Scientific paper
2006-12-08
Physics
Condensed Matter
Materials Science
Related experimental paper cond-mat/0612201
Scientific paper
We investigate photoisomerization (PI), the shape change of a molecule upon photoabsorption, in a dissipative environment using a simple spin-boson model. We identify two classes of environment depending on whether it "entangles" with the molecule. In the absence of entanglement, the environment merely causes a blue shift of the required photon frequency and reduces the quantum efficiency of PI. With entanglement the molecule can undergo a quantum phase transition between a state that photoisomerizes to a state that does not.
Lee Dung-Hai
Li Jian-Xin
Wu Chang-Qin
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