Shengwen Li, Yining You.

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Presentation transcript:

Shengwen Li, Yining You

Entropy dynamics of a dephasing model in a squeezed thermal bath Two level system Squeezed thermal bath Interaction

Calculation: 1.Quantum Motion in Interaction picure, partial trace 2.Von-Neumann entropy of system and bath System dynamics Conclusion: 1.High T, Long-time scale: Always positive, squeezing-dependent 2.General case: keep depahsing, Entropy increases

? Bath dynamics increases Numerical: Only under high T is accurate Anaytical: contains no system information Physical: Under high T, bath barely influenced by system

Thermal bath Squeezed thermal bath Conclusion: