用量子光操纵固体中的缠结有序
Manipulating intertwined orders in solids with quantum light
摘要：
干涉有序普遍存在于强关联电子系统中，并导致量子材料中有趣的现象。在本文中，我们探索了通过量子光纠缠电子态来操纵纠缠有序的独特机会。使用量子Floquet形式主义来研究腔介导的相互作用，我们表明真空涨落有效地增强了电荷密度波的相关性，产生了一个相位与纠缠的电子秩序和光子的相干性，与假定的超辐射行为的热力学极限。此外，即使在腔中注入一个单光子，不同的订单，包括$s$ -波和$η$ -配对超导，可以选择性地增强。我们的研究提出了一种新的和可推广的途径来控制交织的秩序，并在量子材料中创造光物质纠缠。该机制和方法可以很容易地推广到更复杂的情况。
英文摘要：
Intertwined orders exist ubiquitously in strongly correlated electronic systems and lead to intriguing phenomena in quantum materials. In this paper, we explore the unique opportunity of manipulating intertwined orders through entangling electronic states with quantum light. Using a quantum Floquet formalism to study the cavity-mediated interaction, we show the vacuum fluctuations effectively enhance the charge-density-wave correlation, giving rise to a phase with entangled electronic order and photon coherence, with putative superradiant behaviors in the thermodynamic limit. Furthermore, upon injecting even one single photon in the cavity, different orders, including $s$--wave and $η$--paired superconductivity, can be selectively enhanced. Our study suggests a new and generalisable pathway to control intertwined orders and create light-matter entanglement in quantum materials. The mechanism and methodology can be readily generalised to more complicated scenarios.
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