We propose a scheme for dissipative preparation of maximal entanglement in a two-qubit Heisenberg XXZ model interacting asymmetrically with two independent boson thermal reservoirs with different temperature. One reservoir is common to both qubits, while the other is connected with just one qubit. We analytically and numerically investigate the steady-state entanglement of the qubits, based on the Markovian quantum master equation. We study the influence of the inherent asymmetry induced by the asymmetrically couplings of qubits to the reservoirs, on the steady-state entanglement of the qubits. While the temperature gradient of reservoirs generally deteriorate quantum correlations, we show that in the presence of the inherent asymmetry, the maximal entanglement can revive by increasing temperature gradient, at high base temperature of the reservoirs. We find that by turning on the asymmetry, perfect rectification can be achieved without introducing any additional asymmetry to the system. We also discover that the obtained perfect rectification is associated with maximizing of the steady-state entanglement.

我们提出了一个耗散的两纠缠海森堡XXZ模型中最大纠缠的耗散准备方案，该模型与两个独立的玻色子热库不同温度相互作用。一个库对于两个量子位是公用的，而另一个仅与一个量子位相连。我们基于马尔可夫量子主方程对量子位的稳态纠缠进行分析和数值研究。我们研究了量子位到储层的不对称耦合引起的固有不对称性对量子位稳态纠缠的影响。虽然储层的温度梯度通常会使量子相关性恶化，但我们证明，在固有的不对称性存在下，最大纠缠可以通过增加温度梯度来恢复，在高的基础温度下 我们发现通过开启不对称性，可以在不引入任何其他不对称性的情况下实现完美的整流。我们还发现，获得的完美整流与稳态纠缠的最大化相关。