论文标题
冗余放大信息抑制多体系统中的量子相关性
Redundantly amplified information suppresses quantum correlations in many-body systems
论文作者
论文摘要
我们在多体系统中建立了量子相关性的界限。他们揭示了有关量子系统的哪种信息可以同时记录在其环境的不同部分。具体而言，监视环境片段的独立代理只能在放大和冗余传播（因此有效的经典）信息上窃取有关耐磨性耐药指针的信息。我们还表明，经典客观性的出现是通过有条件的互信息的独特缩放来表达的，绕过硬数值优化。我们的结果验证了量子达尔文主义的核心思想：客观的经典现实不需要假设，也不是偶然的，而是量子理论的引人注目的新兴特征，否则，在没有偏移和放大的情况下，否则会导致“量子怪异”。特别是，访问环境片段的代理之间缺乏共识是信息不足的限制，这是对系统信息不完整的度量。
We establish bounds on quantum correlations in many-body systems. They reveal what sort of information about a quantum system can be simultaneously recorded in different parts of its environment. Specifically, independent agents who monitor environment fragments can eavesdrop only on amplified and redundantly disseminated - hence, effectively classical - information about the decoherence-resistant pointer observable. We also show that the emergence of classical objectivity is signaled by a distinctive scaling of the conditional mutual information, bypassing hard numerical optimizations. Our results validate the core idea of Quantum Darwinism: objective classical reality does not need to be postulated and is not accidental, but rather a compelling emergent feature of quantum theory that otherwise - in absence of decoherence and amplification - leads to "quantum weirdness". In particular, a lack of consensus between agents that access environment fragments is bounded by the information deficit, a measure of the incompleteness of the information about the system.
