Hi, QuTiP users!
I have a question about the form of the collapse operator for pure dephasing.
From examples in the user guide, I find it as sqrt(gamma)*sigmaz(). Yet in an article (titled complete coherent control of a quantum dot strongly coupled to a nanocavity), where QuTiP was applied, the collapse operator is written as sqrt(gamma)*|1><1|. Since sigmaz() = |1><1| - |0><0|, there is difference between the two.
My question is which one is correct. Thanks!
Best regards, Pu Zhang
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Faculty at School of Physics, Huazhong University of Science and Technology
Room 819 (N.), Yifu Science and Technology Building
1037 Luoyu Road, Wuhan, China