Progress and prospects of quantum emission from perovskites

Quantum emissions, such as single photon emission (SPE) and superradiance (SR), are fundamental ingredients of quantum optical technology. The quest for efficient, controllable, and scalable quantum emitters is crucial for successfully implementing various quantum technologies, such as quantum computing, secure quantum communication and high-precision metrology. Recently, perovskite quantum dots (PQDs) have emerged as highly efficient sources of quantum emission due to their excellent optical properties, including near 100% quantum yield, high optical absorbance, and tunable bandgaps covering the entire visible range. This Prospective introduces the principles of quantum emissions, including SPE and SR, and summarizes recent progress in exploring quantum emissions in PQDs. We focus on the prospects, advantages, and challenges associated with the quantum emissions from PQDs. This Prospective concludes with an outlook on PQDs in advancing future quantum technologies.