1. Shengwen Li, Yining You

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

3. 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

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

5. Thermal bath
Squeezed thermal bath
Conclusion: