论文标题
用于操作纠缠引擎的关键热电流
Critical heat current for operating an entanglement engine
论文作者
论文摘要
最近提出了自主纠缠引擎，以生成稳态的双方和多部分纠缠，仅利用不同温度下与热浴的不连贯相互作用。在这项工作中，我们调查了两倍纠缠引擎中的热电流和纠缠之间的相互作用，从而导致发动机成功操作的关键热电流，即存在纠缠的截止值。因此，热流可以看作是纠缠存在的见证。在弱化量子耦合的状态下，我们还研究了两个实验相关参数对Qubits的影响，即能量失调和隧道对纠缠产量的影响。最后，我们表明，在不平衡的纠缠引擎的背景下，强质量耦合的政权比弱政权没有明显的优势。
Autonomous entanglement engines have recently been proposed to generate steady-state bipartite and multipartite entanglement exploiting only incoherent interactions with thermal baths at different temperatures. In this work, we investigate the interplay between heat current and entanglement in a two-qubit entanglement engine, deriving a critical heat current for successful operation of the engine, i.e. a cut-off above which entanglement is present. The heat current can thus be seen as a witness to the presence of entanglement. In the regime of weak-inter qubit coupling, we also investigate the effect of two experimentally relevant parameters for the qubits, the energy detuning and tunnelling, on the entanglement production. Finally, we show that the regime of strong inter-qubit coupling provides no clear advantage over the weak regime, in the context of out-of-equilibrium entanglement engines.
