Fig. 2

(Color online) The currents of heat and work as a function of the frequency \(\omega _{{C}}\) of ancilla of the reservoir \(R_{C}\) for the symmetric case. The cascaded interactions between subsystems \(S_{1}\) and \(S_{2}\) and \(R_{C}\) for \(T_{A}=2.4\omega _{C}>T_{C}=2\omega _{C}>T_{B}=0.5\omega _{{C}}\) (a) and \(T_{A}=0.5\omega _{{C}}<T_{C}=2\omega _{{C}}<T_{B}=2.4\omega _{{C}}\) (b). The simultaneous interactions between \(S_{1}\) and \(S_{2}\) and \(R_{C}\) (c). The other parameters are chosen as \(\omega _{S_1}=\omega _{S_2}=2 \omega _{C}, J=\omega _{{C}},\Gamma _A=\Gamma _B=1\).