We consider two two-level particles (qubits) as the working substances of measurement-based quantum heat engines. A measurement-based quantum heat engine is similar to a quantum Otto heat engine other than a quantum isochoric process is replaced by the quantum measurement. We discuss two identical Bosons case and two interacting particles case, respectively. For two Bosons, we find the efficiency is same to a single-particle case but the work output is enhanced. It tends to classical-like result in low temperature regime and exhibits strong quantum effects in high temperature regime, which is counterintuitive. For two interacting qubits, we show the work done is always suppressed by the coupling. The efficiency can be improved under certain conditions in local measurement case and is same to a single-particle case when Bell measurement is done.

中文翻译：

---

基于测量的量子热机中的两个粒子没有反馈控制

我们认为两个两级粒子（量子位）是基于测量的量子热机的工作物质。基于测量的量子热机类似于量子奥托热机，只是量子等容过程被量子测量所替代。我们分别讨论两个相同的玻色子情形和两个相互作用的粒子情形。对于两个玻色子，我们发现效率与单粒子情况相同，但工作输出得到了增强。它倾向于在低温状态下像经典的结果，并且在高温状态下表现出强大的量子效应，这是违反直觉的。对于两个相互作用的量子位，我们表明完成的工作总是受到耦合的抑制。在局部测量情况下，可以在某些条件下提高效率，在完成Bell测量时，效率与单粒子情况相同。