论文标题
量子振荡器的纠缠与不同的热浴
Entanglement of quantum oscillators coupled to different heat baths
论文作者
论文摘要
我们研究了两个耦合振荡器的非平衡动力学，它们在不同温度下与他们自己的量子标量场的热浴相互作用$ t_1 $和$ t_2 $与它们之间的双线耦合。我们特别关注其量子状态的纠缠或不可分割性。可以确定两个相应的振荡器的临界温度，即$ t_ {1c} $和$ t_ {2c} $，高于纠缠消失的临界温度。发现发现两个阻尼参数在很大程度上不同时，例如$γ_1\llγ_2$，相对于频率$ $ $ω_+$，关键温度$ t_ {1c} $，两个正常模式频率之间的较高频率可以很大，可以很大，$ t_ {1c {1c} {1c} \ ggg $ prot $ to $ t_+$ t_;缠结的可能性。还讨论了两个振荡器与温度依赖性阻尼参数的纠缠$γ_{1; 2，T} $从热浴中进行了讨论。
We study the non-equilibrium dynamics of two coupled oscillators interacting with their own heat baths of quantum scalar fields at different temperature $T_1$ and $T_2$ with bilinear couplings between them. We particularly focus on the entanglement or inseparability property of their quantum states. The critical temperatures of two respective oscillators, $T_{1c}$ and $T_{2c}$, higher than which the entanglement disappears, can be determined. It is found that when two damping parameters are largely different, say $γ_1 \ll γ_2$, the critical temperature $T_{1c}$ with respect to the frequency $Ω_+$, the higher frequency among two normal modes frequencies, can be very large, $T_{1c} \gg Ω_+$, while $T_{2c} \propto Ω_+$ with the possibility of hot entanglement. The entanglement of two oscillators with the temperature-dependent damping parameters $γ_{1;2,T}$ from heat baths is also discussed.
