@article{Panfil2025,

title = {Room-temperature quantum emission from CuZn-VS defects in ZnS:Cu colloidal nanocrystals},

author = {Yossef E. Panfil and Sarah M. Thompson and Gary Chen and Jonah Ng and Cherie R. Kagan and Lee C. Bassett},

url = {https://arxiv.org/abs/2501.11812},

year  = {2025},

date = {2025-01-21},

urldate = {2025-01-21},

journal = {arxiv:2501.11812},

abstract = {We report room-temperature observations of CuZn-VS quantum emitters in individual ZnS:Cu nanocrystals (NCs). Using time-gated imaging, we isolate the distinct, ∼3-μs-long, red photoluminescence (PL) emission of CuZn-VS defects, enabling their precise identification and statistical characterization. The emitters exhibit distinct blinking and photon antibunching, consistent with individual NCs containing two to four CuZn-VS defects. The quantum emitters' PL spectra show a pronounced blue shift compared to NC dispersions, likely due to photochemical and charging effects. Emission polarization measurements of quantum emitters are consistent with a σ-character optical dipole transition and the symmetry of the CuZn-VS defect. These observations motivate further investigation of CuZn-VS defects in ZnS NCs for use in quantum technologies.},

keywords = {colloidal nanocrystals, forthcoming, quantum defects, ZnS},

pubstate = {forthcoming},

tppubtype = {article}

}

@article{Fishman2021,

title = {Photon emission correlation spectroscopy as an analytical tool for quantum defects},

author = {Rebecca E. K. Fishman and Raj N. Patel and David A. Hopper and Tzu-Yung Huang and Lee C. Bassett},

url = {https://journals.aps.org/prxquantum/abstract/10.1103/PRXQuantum.4.010202

https://arxiv.org/abs/2111.01252},

doi = {10.1103/PRXQuantum.4.010202},

year  = {2023},

date = {2023-03-06},

journal = {PRX Quantum},

volume = {4},

pages = {010202},

abstract = {Photon emission correlation spectroscopy has a long history in the study of atoms, molecules, and, more recently, solid-state quantum defects. In solid-state systems, its most common use is as an indicator of single-photon emission, a key property for quantum technology. However, photon correlation data can provide a wealth of information about quantum emitters beyond their single-photon purity−information that can reveal details about an emitter's electronic structure and optical dynamics that are hidden by other spectroscopy techniques. We present a standardized framework for using photon emission correlation spectroscopy to study quantum emitters, including discussion of theory, data acquisition, analysis, and interpretation. We highlight nuances and best practices regarding the commonly used g(2)(τ=0)<0.5 test for single-photon emission. Finally, we illustrate how this experimental technique can be paired with optical dynamics simulations to formulate an electronic model for unknown quantum emitters, enabling the design of quantum control protocols and assessment of their suitability for quantum information science applications.},

keywords = {First-principles calculations, Materials Physics, Optics, photon emission correlation spectroscopy, photon statistics, point defects, quantum defects},

pubstate = {published},

tppubtype = {article}

}

@article{Fishman2021,

title = {Photon emission correlation spectroscopy as an analytical tool for quantum defects},

author = {Rebecca E. K. Fishman and Raj N. Patel and David A. Hopper and Tzu-Yung Huang and Lee C. Bassett},

url = {https://journals.aps.org/prxquantum/abstract/10.1103/PRXQuantum.4.010202

https://arxiv.org/abs/2111.01252},

doi = {10.1103/PRXQuantum.4.010202},

year  = {2023},

date = {2023-03-06},

journal = {PRX Quantum},

volume = {4},

pages = {010202},

abstract = {Photon emission correlation spectroscopy has a long history in the study of atoms, molecules, and, more recently, solid-state quantum defects. In solid-state systems, its most common use is as an indicator of single-photon emission, a key property for quantum technology. However, photon correlation data can provide a wealth of information about quantum emitters beyond their single-photon purity−information that can reveal details about an emitter's electronic structure and optical dynamics that are hidden by other spectroscopy techniques. We present a standardized framework for using photon emission correlation spectroscopy to study quantum emitters, including discussion of theory, data acquisition, analysis, and interpretation. We highlight nuances and best practices regarding the commonly used g(2)(τ=0)<0.5 test for single-photon emission. Finally, we illustrate how this experimental technique can be paired with optical dynamics simulations to formulate an electronic model for unknown quantum emitters, enabling the design of quantum control protocols and assessment of their suitability for quantum information science applications.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}