The laws of thermodynamics strongly restrict the performance of thermal machines. Standard thermodynamics, initially developed for uncorrelated macroscopic systems, does not hold for microscopic systems correlated with their environments. We here derive an exact formula for the efficiency of any cyclically driven quantum engine by using generalized laws of quantum thermodynamics that account for all possible correlations between all involved parties, including initial correlations. Furthermore, we demonstrate the existence of two basic modes of engine operation: the usual thermal case, where heat is converted into work, and a novel athermal regime, where work is extracted from entropic resources, such as system-bath correlations. In the latter regime, the efficiency is not bounded by the usual Carnot formula. Our results provide a unified formalism to determine the efficiency of correlated microscopic quantum machines.
Entanglement advantage in sensing power-law spatiotemporal noise correlations
Joint Center for Quantum Information and Computer Science, NIST/University of Maryland（量子信息与计算机科学联合中心，美国国家标准与技术研究院/马里兰大学）；Joint Quantum Institute, NIST/University of Maryland（量子联合研究所，美国国家标准与技术研究院/马里兰大学）；Pritzker School of Molecular Engineering, University of Chicago（普里茨克分子工程学院，芝加哥大学）
Universal scaling laws for correlated decay of many-body quantum systems
Institute for Quantum Information and Matter, California Institute of Technology（加州理工学院量子信息与物质研究所）；Department of Physics, Columbia University（哥伦比亚大学物理系）；AWS Center for Quantum Computing（亚马逊量子计算中心）
Effective Hamiltonian description on monitored Majorana chains: correlated power-law hoppings and unconventional entanglement scaling
University of Tokyo（东京大学）；RIKEN Pioneering Research Institute (PRI)（理化学研究所先锋研究本部）；University of Warwick（华威大学）；RIKEN Center for Interdisciplinary Theoretical and Mathematical Sciences (iTHEMS)（理化学研究所交叉理论与数学科学中心）；RIKEN（理化学研究所）；Ritsumeikan University（立命馆大学）
Cavity Control of Strongly Correlated Electrons Beyond Resonant Coupling
RWTH Aachen University（亚琛工业大学）；Max Planck Institute for the Structure and Dynamics of Matter（物质结构与动力学马普研究所）；Max Planck Institute for the Physics of Complex Systems（复杂系统物理马普研究所）
