# Strong system-bath coupling induces negative differential thermal conductance and heat amplification in nonequilibrium two-qubit systems.

@article{Liu2019StrongSC, title={Strong system-bath coupling induces negative differential thermal conductance and heat amplification in nonequilibrium two-qubit systems.}, author={Huan Liu and Chen Wang and Luqin Wang and Jie Ren}, journal={Physical review. E}, year={2019}, volume={99 3-1}, pages={ 032114 } }

Quantum heat transfer is analyzed in nonequilibrium two-qubits systems by applying the nonequilibrium polaron-transformed Redfield equation combined with full counting statistics. Steady-state heat currents with weak and strong qubit-bath couplings are clearly unified. Within the two-terminal setup, the negative differential thermal conductance is unraveled with strong qubit-bath coupling and finite qubit splitting energy. The partially strong spin-boson interaction is sufficient to show the…

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