Solution-processed colloidal nanocrystals of lead halide perovskites have been intensively investigated in recent years in the context of optoelectronic devices, during which time their quantum properties have also begun to attract attention. Their unmatched ease of synthetic tunability and unique structural, optical and electronic properties, in conjunction with the confinement of carriers in three dimensions, have motivated studies on observing and controlling coherent light–matter interaction in these materials for quantum information technologies. This Review outlines the recent efforts and achievements in this direction. Particularly notable examples are the observation of coherent single-photon emission, evidence for superfluorescence and the realization of room-temperature coherent spin manipulation for ensemble samples, which have not been achieved for prototypical colloidal CdSe nanocrystals that have been under investigation for decades. This Review aims to highlight these results, point out the challenges ahead towards realistic applications and bring together the efforts of multidisciplinary communities in this nascent field.

近年来，溶液处理的卤化铅钙钛矿胶体纳米晶体在光电器件领域得到了深入研究，在此期间，它们的量子特性也开始引起人们的关注。它们无与伦比的合成可调性和独特的结构、光学和电子特性，再加上三维空间中载流子的限制，推动了在这些材料中观察和控制相干光与物质相互作用的研究，以用于量子信息技术。本综述概述了最近在这个方向上所做的努力和取得的成就。特别值得注意的例子是相干单光子发射的观察、超荧光的证据以及对集合样品进行室温相干自旋操纵的实现，而这对于已经研究了几十年的原型胶体 CdSe 纳米晶体来说尚未实现。本综述旨在强调这些结果，指出实际应用面临的挑战，并汇集多学科界在这个新兴领域的努力。