Universal Coherence-Induced Power Losses of Quantum Heat Engines in Linear Response
Research output: Contribution to journal › Article › Scientific › peer-review
- University of Stuttgart
We identify a universal indicator for the impact of coherence on periodically driven quantum devices by dividing their power output into a classical contribution and one stemming solely from superpositions. Specializing to Lindblad dynamics and small driving amplitudes, we derive general upper bounds on both the coherent and the total power of cyclic heat engines. These constraints imply that, for sufficiently slow driving, coherence inevitably leads to power losses in the linear-response regime. We illustrate our theory by working out the experimentally relevant example of a single-qubit engine.
|Journal||Physical Review Letters|
|Publication status||Published - 25 Oct 2017|
|MoE publication type||A1 Journal article-refereed|