Coherent phenomena and dynamics of lead halide perovskite nanocrystals for quantum information technologies

Zhu, Jingyi; Li, Yuxuan; Lin, Xuyang; Han, Yaoyao; Wu, Kaifeng

doi:10.1038/s41563-024-01922-z

Nat. Mater.

2024

DOI: 10.1038/s41563-024-01922-z

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Coherent phenomena and dynamics of lead halide perovskite nanocrystals for quantum information technologies

Jingyi Zhu,

Yuxuan Li,

Xuyang Lin

et al.

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Cited by 5 publications

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The Photophysics of Perovskite Emitters: from Ensemble to Single Particle

Feng,

Sum

2024

Advanced Materials

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Halide perovskite emitters are a groundbreaking class of optoelectronic materials possessing remarkable photophysical properties for diverse applications. In perovskite light emitting devices, they have achieved external quantum efficiencies exceeding 28%, showcasing their potential for next‐generation solid‐state lighting and ultra high definition displays. Furthermore, the demonstration of room temperature continuous‐wave perovskite lasing underscores their potential for integrated optoelectronics. Of late, perovskite emitters are also found to exhibit desirable single‐photon emission characteristics as well as superfluorescence or superradiance phenomena for quantum optics. With progressive advances in synthesis, surface engineering, and encapsulation, halide perovskite emitters are poised to become key components in quantum optical technologies. Understanding the underpinning photophysical mechanisms is crucial for engineering these novel emergent quantum materials. This review aims to provide a condensed overview of the current state of halide perovskite emitter research covering both established and fledging applications, distill the underlying mechanisms, and offer insights into future directions for this rapidly evolving field.

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The Photophysics of Perovskite Emitters: from Ensemble to Single Particle

Feng,

Sum

2024

Advanced Materials

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Revealing and Manipulating Hidden Fine-Structure Coherence of Bright Excitons in CsPbI₃ Perovskite Quantum Dots

Gao,

Li,

Yang

et al. 2024

Nano Lett.

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Observation and understanding of fine-structure splitting of bright excitons in lead halide perovskite quantum dots (QDs) are crucial to their emerging applications in quantum light sources and exciton coherence manipulation. Recent studies demonstrate that ensemble-level polarization-resolved transient absorption spectroscopy can reveal the quantum beats arising from the coherence between two fine-structure levels. Here we report the observation of an extra fine-structure quantum coherence hidden in previous studies by using cryo-magnetic quantum beat spectroscopy. In ∼6 nm CsPbI 3 QDs, two splitting energies of 0.25 and 1.20 meV were observed at 1.7 K, which gradually increased to 0.74 and 1.55 meV, respectively, when a longitudinal magnetic field up to 7 T was applied. The field dependence allowed us to extract two distinct nominal Landég-factors corresponding to QDs with different orientations with respect to the external field.

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Temperature dependence of the electron and hole Landé g-factors in CsPbI₃ nanocrystals embedded in a glass matrix

Meliakov,

Zhukov,

Belykh

et al. 2024

Nanoscale

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Coherent phenomena and dynamics of lead halide perovskite nanocrystals for quantum information technologies

Cited by 5 publications

References 127 publications

The Photophysics of Perovskite Emitters: from Ensemble to Single Particle

The Photophysics of Perovskite Emitters: from Ensemble to Single Particle

Revealing and Manipulating Hidden Fine-Structure Coherence of Bright Excitons in CsPbI₃ Perovskite Quantum Dots

Temperature dependence of the electron and hole Landé g-factors in CsPbI₃ nanocrystals embedded in a glass matrix

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Coherent phenomena and dynamics of lead halide perovskite nanocrystals for quantum information technologies

Cited by 5 publications

References 127 publications

The Photophysics of Perovskite Emitters: from Ensemble to Single Particle

The Photophysics of Perovskite Emitters: from Ensemble to Single Particle

Revealing and Manipulating Hidden Fine-Structure Coherence of Bright Excitons in CsPbI3 Perovskite Quantum Dots

Temperature dependence of the electron and hole Landé g-factors in CsPbI3 nanocrystals embedded in a glass matrix

Contact Info

Product

Resources

About

Revealing and Manipulating Hidden Fine-Structure Coherence of Bright Excitons in CsPbI₃ Perovskite Quantum Dots

Temperature dependence of the electron and hole Landé g-factors in CsPbI₃ nanocrystals embedded in a glass matrix