The formation of coherent macroscopic states and the manipulation of their entanglement using external stimuli are essential for emerging quantum applications. However, the observation of collective quantum phenomena such as Bose–Einstein condensation, superconductivity, superfluidity and superradiance has been limited to extremely low temperatures to suppress dephasing due to random thermal agitations. Here we report room-temperature superfluorescence in hybrid perovskite thin films. This surprising discovery shows that in this material platform, there exists an extremely strong immunity to electronic dephasing due to thermal processes. To explain this observation, we propose that the formation of large polarons in hybrid perovskites provides a quantum analogue of vibration isolation to electronic excitation and protects it against dephasing even at room temperature. Understanding the origins of sustained quantum coherence and the superfluorescence phase transition at high temperatures can provide guidance to design systems for emerging quantum information technologies and to realize similar high-temperature macroscopic quantum phenomena in tailored materials.

相干宏观状态的形成以及使用外部刺激对其纠缠的操纵对于新兴的量子应用至关重要。然而，对集体量子现象（如玻色-爱因斯坦凝聚、超导、超流和超辐射）的观察仅限于极低的温度，以抑制由于随机热搅动引起的相移。在这里，我们报告了混合钙钛矿薄膜中的室温超荧光。这一令人惊讶的发现表明，在这种材料平台中，对热过程引起的电子相移具有极强的免疫力。为了解释这一观察，我们提出，在混合钙钛矿中形成大极化子为电子激发提供了振动隔离的量子模拟，并保护其即使在室温下也不会失相。了解高温下持续量子相干和超荧光相变的起源可以为新兴量子信息技术的设计系统提供指导，并在定制材料中实现类似的高温宏观量子现象。