Single-photon source

NTHU Research Team Develops Self-Healing Quantum Emitter with Unprecedented Brightness

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Friday, June 11, 2021
Consumer electronics, Technology, Other Science, Research, Science, Hardware, Physical sciences, Physics, Light, Quantum electronics, Emerging technologies, Quantum chemistry, Quantum dot, Photon, Single-photon source, Quantum dot solar cell

Although perovskite quantum dots (PQDs) are rising stars among quantum emitters, their inherent instability has limited their development.

Key Points: 
  • Although perovskite quantum dots (PQDs) are rising stars among quantum emitters, their inherent instability has limited their development.
  • Their PQDs display unprecedented single-photon brightness; indeed, they have broken the world-record for the brightest room-temperature quantum emitter materiala major breakthrough for quantum information processing.
  • Lin notes that their spray-synthesized perovskite quantum emitter requires only about 1% of the excitation intensity needed by other quantum emitters, and provides a single-photon brightness exceeding 9 million photons per secondthe new world record.
  • With such excellent performancehigh single-photon brightness, high single-photon purity, and high stabilitytheir perovskite quantum emitter is a promising material for future application in quantum computing and quantum communications.