By considering level shifting during the insertion process we revisit thequantum Szilard engine (QSZE) with fully quantum consideration. We derive thegeneral expressions of the heat absorbed from thermal bath and the total workdone to the environment by the system in a cycle with two different cyclicstrategies. We find that only the quantum information contributes to theabsorbed heat, and the classical information acts like a feedback controllerand has no direct effect on the absorbed heat. This is the first demonstrationof the different effects of quantum information and classical information forextracting heat from the bath in the QSZE. Moreover, when the well width$L\rightarrow \infty $ or the temperature of the bath $T\rightarrow \infty $the QSZE reduces to the classical Szilard engine (CSZE), and the total worksatisfies the relation $W_{\mathtt{tot}}=k_{B}T \mathtt{ln}2$ as obtained bySang Wook Kim et al. [Phys. Rev. Lett. 106, 070401 (2011)] for one particlecase.
展开▼
机译：通过在插入过程中考虑电平移动，我们重新考虑了量子Szilard引擎（QSZE）。我们推导了在两个不同的循环策略下，系统从热浴吸收的热量和系统向环境工作的总热量。我们发现，只有量子信息有助于吸收热量，而经典信息就像反馈控制器一样，对吸收热量没有直接影响。这是量子信息和经典信息从QSZE浴中提取热量的不同影响的首次演示。此外，当井宽$ L \ rightarrow \ infty $或熔池温度$ T \ rightarrow \ infty $时，QSZE降低为经典的Szilard发动机（CSZE），总工作量满足关系式$ W _ {\ mathtt { tot}} = k_ {B} T \ mathtt {ln} 2 $，由Sang Wook Kim等人获得。 [物理牧师106，070401（2011）]。
展开▼
