Room-temperature quantum emission from $\mathrm{Cu_{Zn}}$-$\mathrm{V_{S}}$ defects in ZnS:Cu colloidal nanocrystals
Fuente:
arXiv
Gespeichert in:
| Hauptverfasser: | , , , , , |
|---|---|
| Format: | Preprint |
| Veröffentlicht: |
2025
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1866929683166134272 |
|---|---|
| author | Panfil, Yossef E. Thompson, Sarah M. Chen, Gary Ng, Jonah Kagan, Cherie R. Bassett, Lee C. |
| author_facet | Panfil, Yossef E. Thompson, Sarah M. Chen, Gary Ng, Jonah Kagan, Cherie R. Bassett, Lee C. |
| contents | We report room-temperature observations of $\mathrm{Cu_{Zn}}$-$\mathrm{V_{S}}$ quantum emitters in individual ZnS:Cu nanocrystals (NCs). Using time-gated imaging, we isolate the distinct, $\sim$3-$μ$s-long, red photoluminescence (PL) emission of $\mathrm{Cu_{Zn}}$-$\mathrm{V_{S}}$ defects, enabling their precise identification and statistical characterization. The emitters exhibit distinct blinking and photon antibunching, consistent with individual NCs containing two to four $\mathrm{Cu_{Zn}}$-$\mathrm{V_{S}}$ 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 $\mathrm{Cu_{Zn}}$-$\mathrm{V_{S}}$ defect. These observations motivate further investigation of $\mathrm{Cu_{Zn}}$-$\mathrm{V_{S}}$ defects in ZnS NCs for use in quantum technologies. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_11812 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Room-temperature quantum emission from $\mathrm{Cu_{Zn}}$-$\mathrm{V_{S}}$ defects in ZnS:Cu colloidal nanocrystals Panfil, Yossef E. Thompson, Sarah M. Chen, Gary Ng, Jonah Kagan, Cherie R. Bassett, Lee C. Mesoscale and Nanoscale Physics Materials Science Quantum Physics We report room-temperature observations of $\mathrm{Cu_{Zn}}$-$\mathrm{V_{S}}$ quantum emitters in individual ZnS:Cu nanocrystals (NCs). Using time-gated imaging, we isolate the distinct, $\sim$3-$μ$s-long, red photoluminescence (PL) emission of $\mathrm{Cu_{Zn}}$-$\mathrm{V_{S}}$ defects, enabling their precise identification and statistical characterization. The emitters exhibit distinct blinking and photon antibunching, consistent with individual NCs containing two to four $\mathrm{Cu_{Zn}}$-$\mathrm{V_{S}}$ 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 $\mathrm{Cu_{Zn}}$-$\mathrm{V_{S}}$ defect. These observations motivate further investigation of $\mathrm{Cu_{Zn}}$-$\mathrm{V_{S}}$ defects in ZnS NCs for use in quantum technologies. |
| title | Room-temperature quantum emission from $\mathrm{Cu_{Zn}}$-$\mathrm{V_{S}}$ defects in ZnS:Cu colloidal nanocrystals |
| topic | Mesoscale and Nanoscale Physics Materials Science Quantum Physics |
| url | https://arxiv.org/abs/2501.11812 |